%tab-nav {
clear: both;
}
%tab-nav ul {
display: inline-flex;
align-items: center;
position: relative;
padding: 0;
margin: 0;
%with-animated-tab-selection ul::after {
@extend %as-pseudo, %with-transition-500;
position: absolute;
bottom: 0;
height: 0;
border-top: 0;
width: calc(var(--selected-width, 0) * 1px);
transform: translate(calc(var(--selected-left, 0) * 1px), 0);
transition-property: transform, width;
%tab-button {
display: inline-block;
padding: 16px 13px;