@-moz-document url(chrome://browser/content/browser.xhtml)
{
  /*
   ***
   * 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 the Firefox View button.
   */
  #firefox-view-button {
    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 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;
  }

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