.tab{transition:color .3s ease-in}.tab:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:4px;background-color:transparent;transition:background-color .3s ease-in,transform .3s ease-in;transform:scaleX(0);transform-origin:center}.tab.selected:after{background-color:var(--color-dark-shaded-orange);transform:scaleX(1);transform-origin:center}.tab.not-selected:after{background-color:var(--color-light-shaded-grey);transform:scaleX(1);transform-origin:center}