@yandex/ui/TabsMenu/_view/TabsMenu_view_default.css

Yandex UI components

/* common */
.TabsMenu_view_default .TabsMenu-Tab {
    position: relative;

    color: var(--tabs-menu-view-default-typo-color-base);
    outline: none;
}

.TabsMenu_view_default.TabsMenu_layout_horiz .TabsMenu-Tab_active::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;

    height: 2px;

    content: '';

    background-color: var(--tabs-menu-view-default-active-line-fill-color-active);

    transition: background-color .15s ease-out;
}