/* Longueur min et max des onglets */
    :root {
        --tab_min_width: 162px;
        --tab_max_width: 162px;
/* use 'about:config > browser.tabs.tabMinWidth' for tab min-width */
    }/* use 'about:config > browser.tabs.tabMinWidth' for tab min-width */
/*
    .tabbrowser-tab:not([pinned]) {
     min-width: var(--tab_min_width) !important;
     clip-width: var(--tab_min_width) !important;
    }
*/
/* tab max-width */
    #tabbrowser-tabs:not([overflow="true"]) .tabbrowser-tab[fadein]:not([pinned]) {
        max-width: var(--tab_max_width) !important;
        overflow: hidden !important;
    }



/* Barre d'onglets sur plusieurs lignes */
    :root{
    --multirow-n-rows: 2;
    --multirow-tab-min-width: 162px;
    --multirow-tab-dynamic-width: 1; /* Change to 0 for fixed-width tabs using the above width. */
    }
    #tabbrowser-tabs{
        min-height: unset !important;
        padding-inline-start: 0px !important;
    }
    /* Test for Firefox > 66 */
        @supports (inset-block:auto){
            #tabbrowser-tabs > .tabbrowser-arrowscrollbox > .arrowscrollbox-scrollbox{
             display: flex;
             flex-wrap: wrap;
             overflow-y: auto;
             max-height: calc(var(--tab-min-height) * var(--multirow-n-rows));
             scrollbar-color: var(--toolbar-bgcolor) var(--lwt-accent-color);
             scrollbar-width: none;
     }
    #tabbrowser-tabs > .tabbrowser-arrowscrollbox {
            overflow: -moz-hidden-unscrollable;
            display: block;
         }
    }
    /* Test for Firefox < 66 */
        @supports not (inset-block:auto){
         #tabbrowser-tabs > .tabbrowser-arrowscrollbox{
            min-height: unset !important;
  }
         #tabbrowser-tabs .scrollbox-innerbox{
            display: flex;
            flex-wrap: wrap;
  }
     #tabbrowser-tabs .arrowscrollbox-scrollbox {
            overflow: -moz-hidden-unscrollable;
            display: block;
     }
    }
    .tabbrowser-tab{ height: var(--tab-min-height); }
        #tabbrowser-tabs .tabbrowser-tab[pinned]{
             position: static !important;
             margin-inline-start: 0px !important;
        }
    .tabbrowser-tab[fadein]:not([pinned]){
             min-width: var(--multirow-tab-min-width) !important;
             flex-grow: var(--multirow-tab-dynamic-width);
     /* Uncomment to enable full-width tabs, also makes tab dragging a tiny bit more sensible
     Don't set to none or you'll see errors in console when closing tabs */
  /*max-width: 100vw !important;*/
    }
    .tabbrowser-tab > stack{ width: 100%; height: 100% }
#tabbrowser-tabs .scrollbutton-up,
#tabbrowser-tabs .scrollbutton-down,
#alltabs-button,
:root:not([customizing]) #TabsToolbar #new-tab-button,
#tabbrowser-tabs spacer,
.tabbrowser-tab::after{ display: none !important
      }