@-moz-document url("chrome://browser/content/browser.xul") {
  .tab-close-button:not([pinned]) {
    display: -moz-box !important;
  }
}

#tabbrowser-tabs .tabbrowser-arrowscrollbox,
#tabbrowser-tabs .arrowscrollbox-scrollbox {
display: block;
}

.scrollbutton-up,
        .arrowscrollbox-overflow-start-indicator,
        .scrollbutton-down,
        .arrowscrollbox-overflow-end-indicator {
display: none !important;
        }

#tabbrowser-tabs .arrowscrollbox-scrollbox .scrollbox-innerbox {
display: flex;
                 flex-wrap: wrap;
                 /*
display: block;
                  */
                 overflow-y: auto !important;
                 min-height: var(--tab-min-height); /* default */
                 max-height: calc(5*var(--tab-min-height)) !important;
}
#tabbrowser-tabs .tabbrowser-tab:not([pinned]) {
        flex-grow: 1;
        flex-wrap:wrap;
        min-width: 150px;
        vertical-align: bottom !important;
}
#tabbrowser-tabs .tabbrowser-tab,
#tabbrowser-tabs .tabbrowser-tab .tab-stack .tab-background {
height: var(--tab-min-height);
}

#tabbrowser-tabs .tabbrowser-tab .tab-stack {
width: 100%;
}

#titlebar-buttonbox {
display: block !important;
                 vertical-align: top !important;
}

#main-window[tabsintitlebar] #tabbrowser-tabs {
        -moz-window-dragging: no-drag;
}