@-moz-document url(chrome://browser/content/browser.xul), url(chrome://browser/content/browser.xhtml)
{
    /* :root { */
    /*     /\* */
    /*      * Helper colours. */
    /*      *\/ */
    /*     --background: var(--black) !important; */
    /*     --foreground: var(--white) !important; */
    /*     --background-alt: var(--bright-black) !important; */
    /*     --foreground-alt: var(--bright-white) !important; */

    /*     /\* */
    /*      * Various root values that can be redefined. */
    /*      *\/ */
    /*     --arrowpanel-border-radius: 0 !important; */
    /*     --autocomplete-popup-highlight-background: var(--background) !important; */
    /*     --autocomplete-popup-highlight-color: var(--foreground) !important; */
    /*     --backbutton-background: transparent !important; */
    /*     --backbutton-border-color: transparent !important; */
    /*     --tab-block-margin: 0 !important; */
    /*     --tab-border-radius: 0 !important; */
    /*     --tabs-border-color: transparent !important; */
    /*     --tabs-top-border-width: 0 !important; */
    /*     --toolbar-field-focus-border-color: var(--background) !important; */
    /*     --toolbar-non-lwt-bgcolor: var(--background) !important; */
    /*     --toolbar-non-lwt-bgimage: none !important; */
    /*     --toolbar-non-lwt-textcolor: var(--foreground) !important; */
    /*     --toolbarbutton-border-radius: 0 !important; */
    /* } */

    /*
     ***
     * Tabbar
     ***
     */

    /*
     * Apply colours and fonts.
     */
    /* .tabbrowser-tab { */
    /*     color: var(--background-alt) !important; */
    /*     font-family: var(--sans-serif-font-family) !important; */
    /*     font-size: var(--sans-serif-font-size) !important; */
    /* } */
    /* .tabbrowser-tab[visuallyselected="true"] { */
    /*     background: var(--background) !important; */
    /*     color: var(--foreground) !important; */
    /* } */

    /*
     * Not sure why is this shit even exists...
     */
    .titlebar-spacer {
        display: none !important;
    }

    /*
     * Disable borders and margins.
     */
    #tabbrowser-tabs {
        border-inline-start: 0 !important;
        /* padding-inline-start: 0 !important; */
        margin-inline-start: 0 !important;
    }
    #tabbrowser-tabs[haspinnedtabs]:not([positionpinnedtabs])
        > #tabbrowser-arrowscrollbox
        > .tabbrowser-tab[first-visible-unpinned-tab] {
        margin-inline-start: none !important;
    }
    .tabbrowser-tab::after,
    .tabbrowser-tab::before {
        border: none !important;
    }

    /*
     * Make tabs backgroundless.
     */
    /* .tab-background, */
    /* .tab-line { */
    /*     display: none !important; */
    /* } */

    /*
     * Stretch tabs to the max by default.
     */
    .tabbrowser-tab[fadein]:not([pinned="true"]) {
        max-width: 100% !important;
    }

    /*
     * Fix favicon location.
     */
    /* .tab-icon-image { */
    /*     margin-inline-end: 10px !important; */
    /*     margin-top: 0px !important; */
    /* } */

    /*
     * "C-t" exists.
     */
    /* #tabs-newtab-button, */
    /* #TabsToolbar #new-tab-button { */
    /*     display: none !important; */
    /* } */

    /*
     * "C-w" exists.
     */
    .tab-close-button {
        display: none !important;
    }

    /*
     ***
     * Navbar & urlbar.
     ***
     */

    /*
     * Remove useless buttons.
     */
    /* #forward-button, */
    /* #back-button, */
    /* #reload-button, */
    /* #stop-button { */
    /*     display: none !important; */
    /* } */

    /*
     * Remove padding between urlbar and side elements.
     */
    #customizableui-special-spring1,
    #customizableui-special-spring2 {
        display: none !important;
    }

    /* #urlbar { */
    /*     background: var(--background) !important; */
    /*     color: var(--foreground) !important; */
    /*     font-family: var(--sans-serif-font-family) !important; */
    /*     font-size: var(--sans-serif-font-size) !important; */
    /*     border-color: transparent !important; */
    /* } */

    /* #urlbar:not(:-moz-lwtheme):not([focused="true"]) > #urlbar-background, */
    /* #searchbar:not(:-moz-lwtheme):not(:focus-within) { */
    /*     border: none !important; */
    /* } */

    /* #urlbar *|*.textbox-input::-moz-placeholder { */
    /*     color: transparent !important; */
    /* } */

    /* .urlbar-icon:hover:not([disabled]), */
    /* .urlbar-icon-wrapper:hover:not([disabled]) { */
    /*     background-color: var(--background-alt) !important; */
    /* } */

    /* #urlbar-background { */
    /*     background: transparent !important; */
    /* } */

    /* .urlbarView-tags, */
    /* .urlbarView-url, */
    /* .urlbarView-title:not(:empty) ~ .urlbarView-action { */
    /*     font-size: var(--sans-serif-font-size) !important; */
    /* } */

    .urlbarView-row[label="Firefox Suggest"] {
        margin-block-start: 0 !important;
    }
    .urlbarView-row[label="Firefox Suggest"]::before {
        display: none !important;
    }

    /*
     ***
     * Misc.
     ***
     */

    /*
     * Call indicator that some "designer" decided to make floating and
     * impossible to hide.
     */
    #webrtcIndicator {
        display: none !important;
    }

    /*
     * Disable some context menu entries.
     */
    #context-navigation {
        display: none !important;
    }

    /*
     * Disable all animations.
     */
    /* * { */
    /*     transition: none !important; */
    /* } */

    /*
     * Remove dumb websites that Mozilla is forced to include.
     */
    .search-one-offs {
        display: none !important;
    }
}