hi, I would like to know how to Apply margin to web content but not when a video is in fullscreen? and keep the margin when Firefox is in fullscreen. I mean I would like to apply a margin to web content that not affect when a video is in fullscreen. I used this code:

:root:not([chromehidden~="toolbar"]) {
        
        /* Web content */
        & #appcontent{
            margin-inline-start: var(--my-vertical-toolbar-width) !important;
        }

        /* Sidebar + sidebar content */
        & #sidebar-box[checked="true"] {
            margin-inline-start: var(--my-vertical-toolbar-width) !important;
        }

        /* Sidebar + sidebar content + web content */
        & #sidebar-box[checked="true"] ~ #appcontent {
            margin-inline-start: 0px !important;
        }
    }

but that applies a margin when a video is in fullscreen, I tried too this code but removes the margin when Firefox is in fullscreen:

:root:not([chromehidden~="toolbar"],[sizemode="fullscreen"]) {
     ...
}
  • MrOtherGuy@lemmy.worldM
    1·
    11 days ago

    At first glance that sounds like for some reason the tab selection is super slow occasionally. The selected attribute on .tabbrowser-tab happens very soon after you click the tab, but the other stuff happens and eventually the .tab-background gets its selected styling. Sounds like that would sometime take several frames during which the background-color is not covered by normal selected-tab styling.

    You can try to replace [selected] there with [visuallyselected] which gets added a bit later, but if there’s some weird latency going on then that might still be too soon.