core-tabs { .core-tabs-bar { @include position(null, null, 0, 0); z-index: $z-index-toolbar; display: flex; width: 100%; background: $core-top-tabs-background; > a { @extend .tab-button; background: $core-top-tabs-background; color: $core-top-tabs-color !important; border-bottom: 1px solid $core-top-tabs-border; font-size: 1.6rem; &[aria-selected=true] { color: $core-top-tabs-color-active !important; border-bottom: 2px solid $core-top-tabs-color-active; } } } core-tab { display: none; &.selected { display: block; } } }