ob du meinen Code anpassen kannst.
Teste bitte diesen kompl. Code mal:
CSS/* Grauer Kasten: */ .browser-toolbar:not(.titlebar-color) { background-color: transparent !important; } /* Schwarze Linie */ #nav-bar:-moz-lwtheme { box-shadow: none !important; } /*Tableiste unten*/ #TabsToolbar { position: absolute; display: block; bottom: 0; width: 100vw; } #navigator-toolbox { position: relative; padding-bottom: calc( var(--tab-min-height) + 8px ); } /*...................Ab hier nur Privater Modus...................*/ /* Das lila Icon für privaten Modus oben rechts eingefügt */ #main-window[privatebrowsingmode=temporary] #PanelUI-button::before { margin-left: 0 !important; margin-right: 0 !important; content: '' !important; display: block !important; width: 20px !important; height: 30px !important; background: url("chrome://global/skin/icons/indicator-private-browsing.svg") !important; background-repeat: no-repeat !important; background-position: 0 8px !important; background-size: 25px 17px !important; } /* Der neue zusätzliche Eintrag: Privater Modus unter dem Tab entfernt */ .private-browsing-indicator-with-label { display: none !important; } /* Mostly transparent on dark theme */ /* More subtle background color on selected tab */ #main-window[lwthemetextcolor="bright"] #tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background[selected=true]:-moz-lwtheme { background-image: linear-gradient(to right, transparent, rgba(255,255,255,0.2) 20%, rgba(255,255,255,0.2) 80%, transparent) !important; } /* No top line on selected tab */ #main-window[lwthemetextcolor="bright"] .tabbrowser-tab[selected="true"] .tab-line { display: none !important; } /* Transparent toolbars */ #main-window[lwthemetextcolor="bright"] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) { background-color: transparent !important; background-image: none !important; } /* Hide tab close buttons until hovered */ .tabbrowser-tab:not([pinned="true"]):not(:hover) .tab-close-button { display: none !important; } /* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom.css made available under Mozilla Public License v. 2.0 See the above repository for updates as well as full license text. */ /* Modify to change window drag space width */ /* Use tabs_on_bottom_menubar_on_top_patch.css if you have menubar permanently enabled and want it on top */ /* IMPORTANT */ /* Get window_control_placeholder_support.css Window controls will be all wrong without it. Additionally on Linux, you may need to get: linux_gtk_window_control_patch.css */ :root{ --uc-titlebar-padding: 0px; } @media (-moz-os-version: windows-win10){ :root[sizemode="maximized"][tabsintitlebar]{ --uc-titlebar-padding: 8px } } #toolbar-menubar[autohide="true"] > .titlebar-buttonbox-container, #TabsToolbar > .titlebar-buttonbox-container{ position: fixed; display: block; top: var(--uc-titlebar-padding,0px); right:0; height: 40px; } /* Mac specific. You should set that font-smoothing pref to true if you are on any platform where window controls are on left */ @supports -moz-bool-pref("layout.css.osx-font-smoothing.enabled"){ :root{ --uc-titlebar-padding: 0px !important } .titlebar-buttonbox-container{ left:0; right: unset !important; } } :root[uidensity="compact"] #TabsToolbar > .titlebar-buttonbox-container{ height: 32px } #toolbar-menubar[inactive] > .titlebar-buttonbox-container{ opacity: 0 } #navigator-toolbox{ padding-top: var(--uc-titlebar-padding,0px) !important; } .titlebar-buttonbox-container > .titlebar-buttonbox{ height: 100%; } .titlebar-placeholder, #TabsToolbar .titlebar-spacer{ display: none; } /* Also hide the toolbox bottom border which isn't at bottom with this setup */ #navigator-toolbox::after{ display: none !important; } @media (-moz-gtk-csd-close-button){ .titlebar-button{ flex-direction: column; } } /* These exist only for compatibility with autohide-tabstoolbar.css */ toolbox#navigator-toolbox > toolbar#nav-bar.browser-toolbar{ animation: none; } #navigator-toolbox:hover #TabsToolbar{ animation: slidein ease-out 48ms 1 } /* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/tabs_on_bottom_menubar_on_top_patch.css made available under Mozilla Public License v. 2.0 See the above repository for updates as well as full license text. */ /* Menubar on top patch - use with tabs_on_bottom.css */ /* Only really useful if menubar is ALWAYS visible */ :root{ --uc-window-control-width: 0px !important } #navigator-toolbox{ padding-top: calc(29px + var(--uc-titlebar-padding,0px)) !important } #toolbar-menubar{ position: fixed; display: flex; top: var(--uc-titlebar-padding,0px); height: 29px; width: 100%; overflow: hidden; } #toolbar-menubar > .titlebar-buttonbox-container{ height: 29px; order: 100; } #toolbar-menubar > [flex]{ flex-grow: 100; } #toolbar-menubar > spacer[flex]{ order: 99; flex-grow: 1; min-width: var(--uc-window-drag-space-width,20px); } #toolbar-menubar .titlebar-button{ padding: 2px 17px !important; } #toolbar-menubar .toolbarbutton-1 { --toolbarbutton-inner-padding: 3px } /* TABS: height */*|*:root { --tab-toolbar-navbar-overlap: 0px !important; --tab-min-height: 25px !important; /*adjust to set height or omit to use density*/ --tab-min-width: 80px !important; /*adjust to set width or omit to use default*/ #tabbrowser-tabs { width: 100vw !important; } #main-window:not([chromehidden*="toolbar"]) #navigator-toolbox {padding-bottom: var(--tab-min-height) !important;} .tab-background { border-radius: 8px 8px 0px 0px !important; border-image: none !important; } .tab-line { display: none; } .tab-close-button { color: red!important; } /* Mostly transparent on dark theme */ /* More subtle background color on selected tab */ #main-window[lwthemetextcolor="bright"] #tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background[selected=true]:-moz-lwtheme { background-image: linear-gradient(to right, transparent, rgba(255,255,255,0.2) 20%, rgba(255,255,255,0.2) 80%, transparent) !important; } /* No top line on selected tab */ #main-window[lwthemetextcolor="bright"] .tabbrowser-tab[selected="true"] .tab-line { display: none !important; } /* Transparent toolbars */ #main-window[lwthemetextcolor="bright"] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) { background-color: transparent !important; background-image: none !important; } /* Hide tab close buttons until hovered */ .tabbrowser-tab:not([pinned="true"]):not(:hover) .tab-close-button { display: none !important; }
Es funktioniert! Vielen, vielen Dank! 
