https://youtu.be/lrcw21GierA
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/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/non_floating_sharp_tabs.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */
/* This style makes tabs and related items non-rounded and connects tabs to toolbars like in previous Firefox versions. */
/* It's not strictly a requirement, but this style expects compact_proton.css to be loaded before it. */
:root{
--proton-tab-block-margin: 0px !important;
--tab-block-margin: 0px !important;
--tabs-shadow-size: 1px !important;
/* Remove next line if you want selected tab to have color other than toolbar background - then it follows your theme color */
--lwt-selected-tab-background-color: var(--toolbar-bgcolor) !important;
/* Uncomment next line to force specific color for tab top line */
/* --tab-line-color: blue !important; */
}
/* This sets a color for border around tabs and between tabs & navigation toolbars. Set to transparent to remove the border.*/
#navigator-toolbox{
--tabs-border-color: color-mix(in srgb, currentcolor 30%, transparent) !important;
}
/* This overrides value in compact_proton.css */
#nav-bar{
box-shadow: 0 -1px 0 0 var(--tabs-border-color) !important;
}
#TabsToolbar{
--toolbarbutton-inner-padding: 7px !important;
--toolbar-bgcolor: transparent;
}
#TabsToolbar .toolbarbutton-1 > .toolbarbutton-badge-stack,
#TabsToolbar .toolbarbutton-1 > .toolbarbutton-icon{ border-radius: 2px !important; }
/* tabs newtab button needs some special styling... */
#tabs-newtab-button{ padding-inline: 0 !important; }
#tabbrowser-arrowscrollbox > #tabs-newtab-button > .toolbarbutton-icon{
border-radius: 0 !important;
width: initial !important;
height: initial !important;
padding: 9px !important;
}
:root[uidensity="compact"] #tabbrowser-arrowscrollbox > #tabs-newtab-button > .toolbarbutton-icon{
padding: 7px !important;
}
#scrollbutton-up,
#scrollbutton-down{ border-radius: 0 !important; border-width: 0 !important; padding-inline: 3px !important; }
/* tab shaping */
.tabbrowser-tab{ padding-inline: 0 !important; }
#tabbrowser-tabs[positionpinnedtabs] .tabbrowser-tab[pinned]{ min-height: calc(var(--tab-min-height) + 2px) !important; }
.tab-content[pinned]{ padding-inline: 11px !important; }
.tab-background{
border-radius: 0 !important;
box-shadow: none !important;
}
.tab-background[selected]{
border-inline: 1px solid var(--tabs-border-color) !important;
}
.tab-stack:hover > .tab-background::before{
background-color: inherit;
}
.tab-stack > .tab-background[selected]::before{
background-color: highlight;
background-image: linear-gradient(var(--tab-line-color),var(--tab-line-color));
}
/* Photon-like tab on hover animation for the top line */
@keyframes tab-line-anim{ from{ margin-inline: 20px } to { margin-inline: 0 } }
.tab-background::before{ animation: tab-line-anim 160ms }
/* Disable animation for selected and pinned tabs */
.tabbrowser-tab[pinned] > .tab-stack > .tab-background::before,
.tab-background[selected]{ animation: none }
/* moves context-line to the bottom */
.tab-context-line{ -moz-box-ordinal-group: 2; margin-inline: 10px !important; }