span.site-pagination-link.selected {
    color: var(--green-400);
}

span.site-pagination-link.selected:after {
    content: '';
    display: block;
    position: absolute;
    top: 100%;
    left: 50%;
    width: 50%;
    height: 2px;
    background-color: var(--green-400);
    font-weight: 700;
    transform: translateX(-50%)
}