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Windows Tutorials

Firefox Tabs on bottom v.65.0 and higher - customize Firefox tabs

(Firefox Tabs nach unten v.65.0 und höher - Firefox anpassen)

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In this Tutorial i show u, how to get the tabs back to the bottom very easy. Because in the newer Versions of Firefox the most Skin Addons not still working and the tabs on top and no option there, but whis that little trick, u get the tabs back to bottom.

For Firefox version 65.0 and higher.

 

Manual:

​

  1. Go to Start/Run (if u dont have it there search on "all programs".

  2. In Run u write %appdata% then press ok.

  3. Now u in the path "user/Appdata/Roaming",

       so u navigate now to "Mozilla/Firefox/Profiles/yourprofile.default" in that folder you make

       a rightclick, then u create a new folder there, name the folder "chrome".

   4. Then u must create a new .css file,

        for that u need a program like Notepad++ (click here for  download).

        Then copy & paste that text in the Notepad file:

 

/* Firefox Quantum userChrome.css tweaks ************************************************/
/* Github: https://github.com/aris-t2/customcssforfx ************************************/
/****************************************************************************************/


@import "./tabs_below_navigation_toolbar.css";

/* move titlebar and its content (menubar, tabs toolbar) below navigation/bookmarks toolbar */
#titlebar {
  -moz-box-ordinal-group: 100 !important;
}

/* space above tabs toolbar */
#main-window[tabsintitlebar][sizemode="maximized"] * #titlebar {
  margin-top: -8px !important;
}

/* space for menubar above navigation toolbar (Firefox titlebar) */
#main-window[tabsintitlebar]:not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 26px !important;
}
#main-window[tabsintitlebar][sizemode="maximized"]:not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 26px !important;
}

/* add 'drag' feature to space above navigation toolbar */
#main-window[tabsintitlebar] #navigator-toolbox,
#main-window[tabsintitlebar] #nav-bar {
  -moz-window-dragging: drag !important;
}

/* move menubar to the top and extend its with to full window width */
#toolbar-menubar {
  position: fixed !important;
  width: 100vw !important;
  -moz-window-dragging: drag !important;
}

/* move menubars / tab toolbars caption buttons to windows top right position */
#main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
  position: fixed !important;
  right: 0 !important;
  visibility: visible !important;
  display: block !important;
}

/* menubar postion after moving to the top */
#toolbar-menubar {
  top: 0px !important;
}

/* Linux/macOS */
/* space above navigation toolbar (OS titlebar) */
/* set to '0', if no menubar is used */
#main-window:not([tabsintitlebar]):not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 28px !important;
}

/* menubar postion in maximized mode after moving to the top */
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar {
  top: 0px !important;
}

/* caption button position in maximized mode after moving to the top */
#main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
  top: -14px !important;
}

/* Windows */
@media (-moz-os-version:windows-win10), (-moz-os-version:windows-win8), (-moz-os-version:windows-win7) {
   /* set to '0', if no menubar is used */
   #main-window:not([tabsintitlebar]):not([sizemode="fullscreen"]) #nav-bar {
     margin-top: 18px !important;
   }
   /* set to '0', if no menubar is used */
   #main-window[tabsintitlebar][sizemode="maximized"]:not([sizemode="fullscreen"]) #nav-bar {
     margin-top: 34px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar {
     top: 8px !important;
   }
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 0px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 8px !important;
   }
}

/* hide line above navigation toolbar appearing in some cases */
#main-window:not([tabsintitlebar]) #nav-bar,
#main-window:not([tabsintitlebar]) #navigator-toolbox {
  border-top: 0 !important;
  box-shadow: unset !important;
}

/* force buttons on menubar being very small to not break the toolbar */
#toolbar-menubar toolbaritem > toolbarbutton .toolbarbutton-icon,
#toolbar-menubar > toolbarpaletteitem toolbarbutton .toolbarbutton-icon,
#toolbar-menubar > toolbarbutton .toolbarbutton-icon {
  padding: 0px 0px !important;
  height: 16px !important;
  width: 16px !important;
}
#toolbar-menubar toolbaritem > toolbarbutton,
#toolbar-menubar > toolbarpaletteitem toolbarbutton,
#toolbar-menubar > toolbarbutton {
  position: relative !important;
  padding: 0px 0px !important;
  margin: 0px 0px !important;
}
#toolbar-menubar toolbaritem > toolbarbutton .toolbarbutton-icon,
#TabsToolbar-customization-target > toolbarpaletteitem toolbarbutton .toolbarbutton-icon,
#TabsToolbar-customization-target > toolbarbutton .toolbarbutton-icon {
  padding: unset !important;
  height: unset !important;
  width: unset !important;
}

/* make sure button icon colors set correctly */
#main-window:not(:-moz-lwtheme) #TabsToolbar-customization-target toolbarbutton .toolbarbutton-icon,
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar-customization-target toolbarbutton .toolbarbutton-icon {
  fill: var(--classic_squared_tabs_new_tab_icon_color) !important;
  color: var(--classic_squared_tabs_new_tab_icon_color) !important;
}

/* tweaks for fullscreen mode */
#main-window[tabsintitlebar][sizemode="fullscreen"] * #TabsToolbar {
-moz-padding-start: 0px !important;
}
/* tweaks for fullscreen mode */
#main-window[tabsintitlebar][sizemode="fullscreen"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="fullscreen"] #toolbar-menubar[autohide="true"] ~ #TabsToolbar .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="fullscreen"] #navigator-toolbox #PanelUI-button,
#main-window #TabsToolbar #window-controls {
  display: none !important;
}

/* hide non-required items */
#TabsToolbar .private-browsing-indicator,
#TabsToolbar #window-controls,
#TabsToolbar *[type="caption-buttons"],
#TabsToolbar *[type="pre-tabs"],
#TabsToolbar *[type="post-tabs"] {
  display: none !important;
}

/* Windows 7 extra tweaks */
@media (-moz-os-version: windows-win7) {
  @media all and (-moz-windows-compositor) {
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) * .titlebar-buttonbox-container {
     display: none !important;
   }
  }
  @media not all and (-moz-windows-compositor) {
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: -8px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 0px !important;
   }
  }
}

/* Windows 10 extra tweaks */
@media (-moz-os-version: windows-win10) {
  #main-window:not([tabsintitlebar]) menubar > menu:not(:-moz-lwtheme):hover:not([disabled="true"]),
  #main-window:not([tabsintitlebar]) menubar > menu:not(:-moz-lwtheme)[_moz-menuactive="true"]:not([disabled="true"]) {
   background-color: Highlight !important;
   color: HighlightText !important;
  }
}

/* disable Mozillas tab jumping nonsense when moving tabs */
#navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {
  padding-bottom: unset !important;
}
#navigator-toolbox[movingtab] #tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}
#navigator-toolbox[movingtab] > #nav-bar {
  margin-top: unset !important;
}

​

5. Now u press on "File/Save as" and u name the file "userChrome.css",

         on bottom u choice the option ".css" & save it.

6. The new .css file copy or move it now in the chrome folder.

7. Copy & Paste this new userChrome.css in the same folder and change the name of the copy to "tabs_below_navigation_toolbar.css".
8. Open that file with double-click, then delete the text and copy that text inside:

​

/* Firefox Quantum userChrome.css tweaks ************************************************/
/* Github: https://github.com/aris-t2/customcssforfx ************************************/
/****************************************************************************************/


:root {
  --colored_menubar_background_image: linear-gradient(#f9f9fa,#f9f9fa);
  --general_toolbar_color_toolbars: linear-gradient(#f9f9fa,#f9f9fa);
  --general_toolbar_color_navbar: linear-gradient(#f9f9fa,#f9f9fa);
  --tabs_toolbar_color_tabs_not_on_top: linear-gradient(#f9f9fa,#f9f9fa);
  --tabs_toolbar_border-tnot_normal_mode_size: 1px;
  --tabs_toolbar_border-tnot_normal_mode: var(--tabs-border-color);
  --classic_squared_tabs_tab_text_color: black;
  --classic_squared_tabs_new_tab_icon_color: black;
  --classic_squared_tabs_tab_text_shadow: transparent;
  --tab-min-height_tnot: 32px;
}

:root[uidensity=compact]  {
  --tab-min-height_tnot: 28px;
}

:root[uidensity=touch] {
  --tab-min-height_tnot: 40px;
}

/* tabs toolbar adjustment */
#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#TabsToolbar {
  -moz-padding-start: 2px !important;
}

#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[uidensity=compact][tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#TabsToolbar:-moz-lwtheme,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[sizemode="maximized"] #TabsToolbar,
#main-window[tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #TabsToolbar {
  -moz-padding-start: 0px !important;
}

#main-window[tabsintitlebar][sizemode="normal"]:not([sizemode="fullscreen"]) #TabsToolbar {
  margin-top: 0px !important;
}

#main-window[tabsintitlebar][sizemode="normal"][chromehidden~="menubar"] #TabsToolbar,
#main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive] + #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"][chromehidden~="menubar"] #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive] + #TabsToolbar {
  padding-top: 0px !important;
}

#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"]:not([inactive="true"]) ~ #TabsToolbar,
#main-window[tabsintitlebar] #toolbar-menubar[autohide="false"] ~ #TabsToolbar{
  margin-top: 0px !important;
}

/* tab title in titlebar support */
#main-window[tabsintitlebar][sizemode="normal"] #navigator-toolbox #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="normal"] #navigator-toolbox #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #navigator-toolbox #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #navigator-toolbox #TabsToolbar,
#main-window[tabsintitlebar][sizemode="normal"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="normal"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar{
  margin-top: 0px !important;
}

/* titlebar button support */
#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #nav-bar{
  margin-top: 2px !important;
}

/* fix for application/hamburger button in titlebar */
#main-window[tabsintitlebar][sizemode="fullscreen"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #nav-bar #PanelUI-button {
  visibility: collapse !important;
}

#main-window[inDOMFullscreen="true"] #TabsToolbar {
  opacity: 0 !important;
}

/* tab height */
#tabbrowser-tabs,
#tabbrowser-tabs > .tabbrowser-arrowscrollbox,
.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
  min-height: var(--tab-min-height_tnot) !important;
}

/* toolbar order (start) ************************************/
#print-preview-toolbar,
#printedit-toolbar,
#titlebar {
  -moz-box-ordinal-group: 0 !important;
}
#navigator-toolbox #toolbar-menubar {
  -moz-box-ordinal-group: 1 !important;
}
/* navigation toolbar */
#navigator-toolbox #nav-bar {
  -moz-box-ordinal-group: 2 !important;
}
/* bookmarks toolbar */
#navigator-toolbox #PersonalToolbar {
  -moz-box-ordinal-group: 3 !important;
}
/* 3rd party toolbars */
#navigator-toolbox toolbar {
  -moz-box-ordinal-group: 10 !important;
}
/* tabs toolbar */
#navigator-toolbox #TabsToolbar {
  -moz-box-ordinal-group: 100 !important;
}
/* toolbar order (end) **************************************/

/* toolbar colors */
#main-window:not([tabsintitlebar]) #toolbar-menubar:not(:-moz-lwtheme) {
  background-image: var(--colored_menubar_background_image) !important;
  border: 0px !important;
  margin-bottom: -1px !important;
}

#nav-bar:not(:-moz-lwtheme) {
  -moz-appearance: none !important;
  background: var(--general_toolbar_color_navbar, inherit) !important;
}

toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
  -moz-appearance: none !important;
  background: var(--general_toolbar_color_toolbars, inherit) !important;
}
#TabsToolbar:not(:-moz-lwtheme){
  -moz-appearance: none !important;
  background-image: var(--tabs_toolbar_color_tabs_not_on_top) !important;
}

/* remove color overlay for lw-themes */
#main-window[style*='--lwt-header-image'] :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme{
  background: unset !important;
}

/* adjust compact themes background color */
#main-window:not([style*='--lwt-header-image']) #TabsToolbar:-moz-lwtheme {
  -moz-appearance: none !important;
  background-image: linear-gradient(var(--toolbar-bgcolor),var(--toolbar-bgcolor)) !important;
}

#main-window:not(:-moz-lwtheme) #TabsToolbar :-moz-any(.tabs-newtab-button,.scrollbutton-up,.scrollbutton-down),
#main-window:not(:-moz-lwtheme) #TabsToolbar > toolbarbutton,
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar :-moz-any(.tabs-newtab-button,.scrollbutton-up,.scrollbutton-down),
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar > toolbarbutton {
  fill: var(--classic_squared_tabs_new_tab_icon_color) !important;
  color: var(--classic_squared_tabs_new_tab_icon_color) !important;
}

/* toolbar borders */
#main-window #navigator-toolbox::after {
  opacity: 0 !important;
}

#TabsToolbar{
  margin-bottom: 0px !important;
  border-bottom: 1px solid #5f7181 !important;
}

#main-window[sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
  border-left: var(--tabs_toolbar_border-tnot_normal_mode_size) solid var(--tabs_toolbar_border-tnot_normal_mode) !important;
  border-right: var(--tabs_toolbar_border-tnot_normal_mode_size) solid var(--tabs_toolbar_border-tnot_normal_mode) !important;
  background-clip: padding-box !important;
}

#main-window[sizemode="maximized"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
  border-left: 0px !important;
  border-right: 0px !important;
}

#main-window[style*='--lwt-header-image'][sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme,
#main-window[style*='--lwt-header-image'][sizemode="maximized"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme {
  border-top: 0px !important;
  border-left: 0px !important;
  border-right: 0px !important;
}

#main-window:not([style*='--lwt-header-image']):-moz-lwtheme-brighttext #TabsToolbar:-moz-lwtheme {
  border-bottom: 1px solid #323234 !important;
}

#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-brighttext #TabsToolbar:-moz-lwtheme {
  border-bottom: 1px solid #323234 !important;
}

#main-window:not([sizemode="fullscreen"])[tabsintitlebar] #TabsToolbar{
  -moz-margin-end: 0px !important;
}

#main-window[tabsintitlebar] #TabsToolbar .titlebar-placeholder{
  visibility: collapse !important;
}

#main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] {
  margin-top: 21px !important;
}
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] {
  margin-top: 20px !important;
}

#tabbrowser-tabs .tab-drop-indicator {
  margin-bottom: 0px !important;
}

#PersonalToolbar:-moz-lwtheme,
#nav-bar:-moz-lwtheme {
  background-image: none !important;
  box-shadow: none !important;
  border-top: none !important;
  border-bottom: none !important;
}

/* remove tab fog */
#TabsToolbar:not(:-moz-lwtheme),
#TabsToolbar:not(:-moz-lwtheme)::before,
#TabsToolbar:not(:-moz-lwtheme)::after {
  box-shadow: unset !important;
}

/* remove 'dragging tab' margin/padding nonsense */
#TabsToolbar[movingtab] {
  padding-bottom: unset !important;
}

#TabsToolbar[movingtab] > .tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}

#TabsToolbar[movingtab] + #nav-bar {
  margin-top: unset !important;
}

/* scroll buttons */
#TabsToolbar:not(:-moz-lwtheme) #alltabs-button,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-arrowscrollbox > .scrollbutton-up,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-arrowscrollbox > .scrollbutton-down {
  fill: black !important;
}

/* Fx58+ titlebar placeholders */
#TabsToolbar *[type="pre-tabs"],
#TabsToolbar *[type="post-tabs"] {
  display: none !important;
}

@media (-moz-os-version: windows-win10) {
   #main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] {
     margin-top: 30px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] {
     margin-top: 30px !important;
   }
}

@media (-moz-windows-classic) {

   /* tweaks for Windows Classic theme */
   #nav-bar:not(:-moz-lwtheme),
   #PersonalToolbar:not(:-moz-lwtheme),
   #main-window:not([tabsintitlebar])  #TabsToolbar:not(:-moz-lwtheme) {
     border-left: unset !important;
     border-right: unset !important;
     background: unset !important;
   }

   #main-window[sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
     border-left: 0px !important;
     border-right: 0px !important;
   }

   #main-window:not([tabsintitlebar]) #toolbar-menubar:not(:-moz-lwtheme) {
     background: unset !important;
     box-shadow: unset !important;
     border-bottom: unset !important;
   }

   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox::before,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar::before,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox::after,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar::after {
     background: unset !important;
     box-shadow: unset !important;
     border: unset !important;
     border-image: unset !important;
   }

   #main-window:not([tabsintitlebar]) toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
     background: unset !important;
   }

}

/* tab text colors */
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab {
  color: var(--classic_squared_tabs_tab_text_color) !important;
  text-shadow: 1px 1px 1px var(--classic_squared_tabs_tab_text_shadow) !important;
}

/* fix Windows 7s default tab background (remove dark purple bg color)*/
@media (-moz-os-version: windows-win7) {
  @media (-moz-windows-default-theme) {
   .tabbrowser-tab:not([selected]):not(:hover):not(:-moz-lwtheme) {
     background-color: #e3e4e6 !important;
   }
   .tabbrowser-tab:not([selected]):hover:not(:-moz-lwtheme) {
     background-color: #cccdcf !important;
   }

  }
}

/* Simple Close Tab button */
#TabsToolbar:not(:-moz-lwtheme) #_fe8cab45-aaee-45f8-8765-781e0ebea300_-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://7904448c-2319-4f6f-aac9-a1f701258098/icons/Close-dark.svg") !important;
}

/* close tab button */
#TabsToolbar:not(:-moz-lwtheme) #closetab_fmarin_com-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://31006e48-8e00-476f-8ea9-697e40934b02/icons/icon.svg") !important;
  --webextension-toolbar-image-2x-light: url("moz-extension://31006e48-8e00-476f-8ea9-697e40934b02/icons/icon.svg") !important;
}

/* close window button */
#TabsToolbar:not(:-moz-lwtheme) #close-window-button_nanpuyue_com-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://c914bd13-793f-4a2d-ab66-c655a3d75c52/icons/icon.svg") !important;
  --webextension-toolbar-image-2x-light: url("moz-extension://c914bd13-793f-4a2d-ab66-c655a3d75c52/icons/icon.svg") !important;
}

​

​

9. Just for case if u want tabs back on top, just delete the chrome folder or the 2 css files and its back to top.

​

​

 

​

German:

In diesem Tutorial zeig ich euch, wie ihr ganz einfach die tabs wieder von oben, nach unten verschieben könnt. Da es ja bei den neueren Versionen von Firefox nicht mehr geht & die meisten Addons ja auch nicht mehr funktionieren. Aber mit diesem Trick bekommt ihr sie dennoch wieder nach unten.

 

Anleitung:

​

  1. Clickt auf Start/Ausführen (wenn ihr es dort nicht habt sucht is unter "alle Programme".

  2. In Ausführen schreibt ihr %appdata% und drückt ok.

  3. Jetz seit ihr im Pfad "user/Appdata/Roaming",

       ihr navigiert zu "Mozilla/Firefox/Profiles/deinprofil.default" in diesem Ordner macht ihr

       einen rechtsklick, dann erstellt ihr einen neuen Ordner mit dem Namen "chrome".

   4. Jetzt erstellt ihr eine neue .css file,

        dafür benötigt ihr ein Programm wie z.B. Notepad++ (Hier klicken zum Download).

        Dann kopiert ihr den folgenden Text in die Notepad file rein:

 

/* Firefox Quantum userChrome.css tweaks ************************************************/
/* Github: https://github.com/aris-t2/customcssforfx ************************************/
/****************************************************************************************/


@import "./tabs_below_navigation_toolbar.css";

/* move titlebar and its content (menubar, tabs toolbar) below navigation/bookmarks toolbar */
#titlebar {
  -moz-box-ordinal-group: 100 !important;
}

/* space above tabs toolbar */
#main-window[tabsintitlebar][sizemode="maximized"] * #titlebar {
  margin-top: -8px !important;
}

/* space for menubar above navigation toolbar (Firefox titlebar) */
#main-window[tabsintitlebar]:not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 26px !important;
}
#main-window[tabsintitlebar][sizemode="maximized"]:not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 26px !important;
}

/* add 'drag' feature to space above navigation toolbar */
#main-window[tabsintitlebar] #navigator-toolbox,
#main-window[tabsintitlebar] #nav-bar {
  -moz-window-dragging: drag !important;
}

/* move menubar to the top and extend its with to full window width */
#toolbar-menubar {
  position: fixed !important;
  width: 100vw !important;
  -moz-window-dragging: drag !important;
}

/* move menubars / tab toolbars caption buttons to windows top right position */
#main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
  position: fixed !important;
  right: 0 !important;
  visibility: visible !important;
  display: block !important;
}

/* menubar postion after moving to the top */
#toolbar-menubar {
  top: 0px !important;
}

/* Linux/macOS */
/* space above navigation toolbar (OS titlebar) */
/* set to '0', if no menubar is used */
#main-window:not([tabsintitlebar]):not([sizemode="fullscreen"]) #nav-bar {
  margin-top: 28px !important;
}

/* menubar postion in maximized mode after moving to the top */
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar {
  top: 0px !important;
}

/* caption button position in maximized mode after moving to the top */
#main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
  top: -14px !important;
}

/* Windows */
@media (-moz-os-version:windows-win10), (-moz-os-version:windows-win8), (-moz-os-version:windows-win7) {
   /* set to '0', if no menubar is used */
   #main-window:not([tabsintitlebar]):not([sizemode="fullscreen"]) #nav-bar {
     margin-top: 18px !important;
   }
   /* set to '0', if no menubar is used */
   #main-window[tabsintitlebar][sizemode="maximized"]:not([sizemode="fullscreen"]) #nav-bar {
     margin-top: 34px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar {
     top: 8px !important;
   }
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 0px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 8px !important;
   }
}

/* hide line above navigation toolbar appearing in some cases */
#main-window:not([tabsintitlebar]) #nav-bar,
#main-window:not([tabsintitlebar]) #navigator-toolbox {
  border-top: 0 !important;
  box-shadow: unset !important;
}

/* force buttons on menubar being very small to not break the toolbar */
#toolbar-menubar toolbaritem > toolbarbutton .toolbarbutton-icon,
#toolbar-menubar > toolbarpaletteitem toolbarbutton .toolbarbutton-icon,
#toolbar-menubar > toolbarbutton .toolbarbutton-icon {
  padding: 0px 0px !important;
  height: 16px !important;
  width: 16px !important;
}
#toolbar-menubar toolbaritem > toolbarbutton,
#toolbar-menubar > toolbarpaletteitem toolbarbutton,
#toolbar-menubar > toolbarbutton {
  position: relative !important;
  padding: 0px 0px !important;
  margin: 0px 0px !important;
}
#toolbar-menubar toolbaritem > toolbarbutton .toolbarbutton-icon,
#TabsToolbar-customization-target > toolbarpaletteitem toolbarbutton .toolbarbutton-icon,
#TabsToolbar-customization-target > toolbarbutton .toolbarbutton-icon {
  padding: unset !important;
  height: unset !important;
  width: unset !important;
}

/* make sure button icon colors set correctly */
#main-window:not(:-moz-lwtheme) #TabsToolbar-customization-target toolbarbutton .toolbarbutton-icon,
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar-customization-target toolbarbutton .toolbarbutton-icon {
  fill: var(--classic_squared_tabs_new_tab_icon_color) !important;
  color: var(--classic_squared_tabs_new_tab_icon_color) !important;
}

/* tweaks for fullscreen mode */
#main-window[tabsintitlebar][sizemode="fullscreen"] * #TabsToolbar {
-moz-padding-start: 0px !important;
}
/* tweaks for fullscreen mode */
#main-window[tabsintitlebar][sizemode="fullscreen"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="fullscreen"] #toolbar-menubar[autohide="true"] ~ #TabsToolbar .titlebar-buttonbox-container,
#main-window[tabsintitlebar][sizemode="fullscreen"] #navigator-toolbox #PanelUI-button,
#main-window #TabsToolbar #window-controls {
  display: none !important;
}

/* hide non-required items */
#TabsToolbar .private-browsing-indicator,
#TabsToolbar #window-controls,
#TabsToolbar *[type="caption-buttons"],
#TabsToolbar *[type="pre-tabs"],
#TabsToolbar *[type="post-tabs"] {
  display: none !important;
}

/* Windows 7 extra tweaks */
@media (-moz-os-version: windows-win7) {
  @media all and (-moz-windows-compositor) {
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) * .titlebar-buttonbox-container {
     display: none !important;
   }
  }
  @media not all and (-moz-windows-compositor) {
   #main-window[tabsintitlebar]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: -8px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) .titlebar-buttonbox-container {
     top: 0px !important;
   }
  }
}

/* Windows 10 extra tweaks */
@media (-moz-os-version: windows-win10) {
  #main-window:not([tabsintitlebar]) menubar > menu:not(:-moz-lwtheme):hover:not([disabled="true"]),
  #main-window:not([tabsintitlebar]) menubar > menu:not(:-moz-lwtheme)[_moz-menuactive="true"]:not([disabled="true"]) {
   background-color: Highlight !important;
   color: HighlightText !important;
  }
}

/* disable Mozillas tab jumping nonsense when moving tabs */
#navigator-toolbox[movingtab] > #titlebar > #TabsToolbar {
  padding-bottom: unset !important;
}
#navigator-toolbox[movingtab] #tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}
#navigator-toolbox[movingtab] > #nav-bar {
  margin-top: unset !important;
}

​

    5. Dann geht ihr oben auf "File/Save as" und ihr benennt die file in "userChrome.css",

        unten in der Option wählt ihr ".css" & speichert es.

    6. Die neue css file kopiert oder schiebt ihr nun in den chrome Ordner.
7. Klickt mit rechtsklick auf die userChrome.css datei und kopiert sie und fügt sie im selben   ordner ein.
8. benennt die datei um in: "tabs_below_navigation_toolbar.css"
9. öffnet sie und löscht den text, dann kopiert ihr diesen text rein:

​

/* Firefox Quantum userChrome.css tweaks ************************************************/
/* Github: https://github.com/aris-t2/customcssforfx ************************************/
/****************************************************************************************/


:root {
  --colored_menubar_background_image: linear-gradient(#f9f9fa,#f9f9fa);
  --general_toolbar_color_toolbars: linear-gradient(#f9f9fa,#f9f9fa);
  --general_toolbar_color_navbar: linear-gradient(#f9f9fa,#f9f9fa);
  --tabs_toolbar_color_tabs_not_on_top: linear-gradient(#f9f9fa,#f9f9fa);
  --tabs_toolbar_border-tnot_normal_mode_size: 1px;
  --tabs_toolbar_border-tnot_normal_mode: var(--tabs-border-color);
  --classic_squared_tabs_tab_text_color: black;
  --classic_squared_tabs_new_tab_icon_color: black;
  --classic_squared_tabs_tab_text_shadow: transparent;
  --tab-min-height_tnot: 32px;
}

:root[uidensity=compact]  {
  --tab-min-height_tnot: 28px;
}

:root[uidensity=touch] {
  --tab-min-height_tnot: 40px;
}

/* tabs toolbar adjustment */
#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#TabsToolbar {
  -moz-padding-start: 2px !important;
}

#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[uidensity=compact][tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar:-moz-lwtheme,
#TabsToolbar:-moz-lwtheme,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[sizemode="maximized"] #TabsToolbar,
#main-window[tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"]:not([style*='--lwt-header-image']):-moz-lwtheme #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar]:not([style*='--lwt-header-image']):-moz-lwtheme #TabsToolbar {
  -moz-padding-start: 0px !important;
}

#main-window[tabsintitlebar][sizemode="normal"]:not([sizemode="fullscreen"]) #TabsToolbar {
  margin-top: 0px !important;
}

#main-window[tabsintitlebar][sizemode="normal"][chromehidden~="menubar"] #TabsToolbar,
#main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive] + #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"][chromehidden~="menubar"] #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive] + #TabsToolbar {
  padding-top: 0px !important;
}

#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"]:not([inactive="true"]) ~ #TabsToolbar,
#main-window[tabsintitlebar] #toolbar-menubar[autohide="false"] ~ #TabsToolbar{
  margin-top: 0px !important;
}

/* tab title in titlebar support */
#main-window[tabsintitlebar][sizemode="normal"] #navigator-toolbox #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="normal"] #navigator-toolbox #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #navigator-toolbox #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #navigator-toolbox #TabsToolbar,
#main-window[tabsintitlebar][sizemode="normal"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="normal"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[tabsintitlebar][sizemode="maximized"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar,
#main-window[uidensity=compact][tabsintitlebar][sizemode="maximized"] #navigator-toolbox #toolbar-menubar[autohide="true"][inactive="true"] ~ #TabsToolbar{
  margin-top: 0px !important;
}

/* titlebar button support */
#main-window[tabsintitlebar] #toolbar-menubar[autohide="true"][inactive="true"] ~ #nav-bar{
  margin-top: 2px !important;
}

/* fix for application/hamburger button in titlebar */
#main-window[tabsintitlebar][sizemode="fullscreen"] #toolbar-menubar[autohide="true"][inactive="true"] ~ #nav-bar #PanelUI-button {
  visibility: collapse !important;
}

#main-window[inDOMFullscreen="true"] #TabsToolbar {
  opacity: 0 !important;
}

/* tab height */
#tabbrowser-tabs,
#tabbrowser-tabs > .tabbrowser-arrowscrollbox,
.tabbrowser-tabs[positionpinnedtabs] > .tabbrowser-tab[pinned] {
  min-height: var(--tab-min-height_tnot) !important;
}

/* toolbar order (start) ************************************/
#print-preview-toolbar,
#printedit-toolbar,
#titlebar {
  -moz-box-ordinal-group: 0 !important;
}
#navigator-toolbox #toolbar-menubar {
  -moz-box-ordinal-group: 1 !important;
}
/* navigation toolbar */
#navigator-toolbox #nav-bar {
  -moz-box-ordinal-group: 2 !important;
}
/* bookmarks toolbar */
#navigator-toolbox #PersonalToolbar {
  -moz-box-ordinal-group: 3 !important;
}
/* 3rd party toolbars */
#navigator-toolbox toolbar {
  -moz-box-ordinal-group: 10 !important;
}
/* tabs toolbar */
#navigator-toolbox #TabsToolbar {
  -moz-box-ordinal-group: 100 !important;
}
/* toolbar order (end) **************************************/

/* toolbar colors */
#main-window:not([tabsintitlebar]) #toolbar-menubar:not(:-moz-lwtheme) {
  background-image: var(--colored_menubar_background_image) !important;
  border: 0px !important;
  margin-bottom: -1px !important;
}

#nav-bar:not(:-moz-lwtheme) {
  -moz-appearance: none !important;
  background: var(--general_toolbar_color_navbar, inherit) !important;
}

toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
  -moz-appearance: none !important;
  background: var(--general_toolbar_color_toolbars, inherit) !important;
}
#TabsToolbar:not(:-moz-lwtheme){
  -moz-appearance: none !important;
  background-image: var(--tabs_toolbar_color_tabs_not_on_top) !important;
}

/* remove color overlay for lw-themes */
#main-window[style*='--lwt-header-image'] :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme{
  background: unset !important;
}

/* adjust compact themes background color */
#main-window:not([style*='--lwt-header-image']) #TabsToolbar:-moz-lwtheme {
  -moz-appearance: none !important;
  background-image: linear-gradient(var(--toolbar-bgcolor),var(--toolbar-bgcolor)) !important;
}

#main-window:not(:-moz-lwtheme) #TabsToolbar :-moz-any(.tabs-newtab-button,.scrollbutton-up,.scrollbutton-down),
#main-window:not(:-moz-lwtheme) #TabsToolbar > toolbarbutton,
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar :-moz-any(.tabs-newtab-button,.scrollbutton-up,.scrollbutton-down),
#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-darktext #TabsToolbar > toolbarbutton {
  fill: var(--classic_squared_tabs_new_tab_icon_color) !important;
  color: var(--classic_squared_tabs_new_tab_icon_color) !important;
}

/* toolbar borders */
#main-window #navigator-toolbox::after {
  opacity: 0 !important;
}

#TabsToolbar{
  margin-bottom: 0px !important;
  border-bottom: 1px solid #5f7181 !important;
}

#main-window[sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
  border-left: var(--tabs_toolbar_border-tnot_normal_mode_size) solid var(--tabs_toolbar_border-tnot_normal_mode) !important;
  border-right: var(--tabs_toolbar_border-tnot_normal_mode_size) solid var(--tabs_toolbar_border-tnot_normal_mode) !important;
  background-clip: padding-box !important;
}

#main-window[sizemode="maximized"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
  border-left: 0px !important;
  border-right: 0px !important;
}

#main-window[style*='--lwt-header-image'][sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme,
#main-window[style*='--lwt-header-image'][sizemode="maximized"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar):-moz-lwtheme {
  border-top: 0px !important;
  border-left: 0px !important;
  border-right: 0px !important;
}

#main-window:not([style*='--lwt-header-image']):-moz-lwtheme-brighttext #TabsToolbar:-moz-lwtheme {
  border-bottom: 1px solid #323234 !important;
}

#main-window:not([style*='--lwt-header-image']):-moz-lwtheme:-moz-lwtheme-brighttext #TabsToolbar:-moz-lwtheme {
  border-bottom: 1px solid #323234 !important;
}

#main-window:not([sizemode="fullscreen"])[tabsintitlebar] #TabsToolbar{
  -moz-margin-end: 0px !important;
}

#main-window[tabsintitlebar] #TabsToolbar .titlebar-placeholder{
  visibility: collapse !important;
}

#main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] {
  margin-top: 21px !important;
}
#main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] {
  margin-top: 20px !important;
}

#tabbrowser-tabs .tab-drop-indicator {
  margin-bottom: 0px !important;
}

#PersonalToolbar:-moz-lwtheme,
#nav-bar:-moz-lwtheme {
  background-image: none !important;
  box-shadow: none !important;
  border-top: none !important;
  border-bottom: none !important;
}

/* remove tab fog */
#TabsToolbar:not(:-moz-lwtheme),
#TabsToolbar:not(:-moz-lwtheme)::before,
#TabsToolbar:not(:-moz-lwtheme)::after {
  box-shadow: unset !important;
}

/* remove 'dragging tab' margin/padding nonsense */
#TabsToolbar[movingtab] {
  padding-bottom: unset !important;
}

#TabsToolbar[movingtab] > .tabbrowser-tabs {
  padding-bottom: unset !important;
  margin-bottom: unset !important;
}

#TabsToolbar[movingtab] + #nav-bar {
  margin-top: unset !important;
}

/* scroll buttons */
#TabsToolbar:not(:-moz-lwtheme) #alltabs-button,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-arrowscrollbox > .scrollbutton-up,
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-arrowscrollbox > .scrollbutton-down {
  fill: black !important;
}

/* Fx58+ titlebar placeholders */
#TabsToolbar *[type="pre-tabs"],
#TabsToolbar *[type="post-tabs"] {
  display: none !important;
}

@media (-moz-os-version: windows-win10) {
   #main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar[autohide="true"][inactive="true"] {
     margin-top: 30px !important;
   }
   #main-window[tabsintitlebar][sizemode="maximized"] #toolbar-menubar[autohide="true"][inactive="true"] {
     margin-top: 30px !important;
   }
}

@media (-moz-windows-classic) {

   /* tweaks for Windows Classic theme */
   #nav-bar:not(:-moz-lwtheme),
   #PersonalToolbar:not(:-moz-lwtheme),
   #main-window:not([tabsintitlebar])  #TabsToolbar:not(:-moz-lwtheme) {
     border-left: unset !important;
     border-right: unset !important;
     background: unset !important;
   }

   #main-window[sizemode="normal"] #navigator-toolbox :-moz-any(#nav-bar,#PersonalToolbar,#TabsToolbar) {
     border-left: 0px !important;
     border-right: 0px !important;
   }

   #main-window:not([tabsintitlebar]) #toolbar-menubar:not(:-moz-lwtheme) {
     background: unset !important;
     box-shadow: unset !important;
     border-bottom: unset !important;
   }

   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox::before,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar::before,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #navigator-toolbox::after,
   #main-window:not([tabsintitlebar]):not(:-moz-lwtheme) #nav-bar::after {
     background: unset !important;
     box-shadow: unset !important;
     border: unset !important;
     border-image: unset !important;
   }

   #main-window:not([tabsintitlebar]) toolbar:not(#TabsToolbar):not(#toolbar-menubar):not(#nav-bar):not(:-moz-lwtheme) {
     background: unset !important;
   }

}

/* tab text colors */
#TabsToolbar:not(:-moz-lwtheme) .tabbrowser-tab {
  color: var(--classic_squared_tabs_tab_text_color) !important;
  text-shadow: 1px 1px 1px var(--classic_squared_tabs_tab_text_shadow) !important;
}

/* fix Windows 7s default tab background (remove dark purple bg color)*/
@media (-moz-os-version: windows-win7) {
  @media (-moz-windows-default-theme) {
   .tabbrowser-tab:not([selected]):not(:hover):not(:-moz-lwtheme) {
     background-color: #e3e4e6 !important;
   }
   .tabbrowser-tab:not([selected]):hover:not(:-moz-lwtheme) {
     background-color: #cccdcf !important;
   }

  }
}

/* Simple Close Tab button */
#TabsToolbar:not(:-moz-lwtheme) #_fe8cab45-aaee-45f8-8765-781e0ebea300_-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://7904448c-2319-4f6f-aac9-a1f701258098/icons/Close-dark.svg") !important;
}

/* close tab button */
#TabsToolbar:not(:-moz-lwtheme) #closetab_fmarin_com-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://31006e48-8e00-476f-8ea9-697e40934b02/icons/icon.svg") !important;
  --webextension-toolbar-image-2x-light: url("moz-extension://31006e48-8e00-476f-8ea9-697e40934b02/icons/icon.svg") !important;
}

/* close window button */
#TabsToolbar:not(:-moz-lwtheme) #close-window-button_nanpuyue_com-browser-action {
  --webextension-toolbar-image-light: url("moz-extension://c914bd13-793f-4a2d-ab66-c655a3d75c52/icons/icon.svg") !important;
  --webextension-toolbar-image-2x-light: url("moz-extension://c914bd13-793f-4a2d-ab66-c655a3d75c52/icons/icon.svg") !important;
}



10. Nun nur noch Speichern.

11. Öffnet nun Firefox & eure Tabs sollten unten sein.

12. Für den fall das ihr es wieder Rückgänig machen wollt & eure tabs wieder oben haben

wollt, ihr müsst dafür einfach nur die file aus dem Ordner oder den Ordner chrome löschen, dann sind die tabs wieder oben.

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