/* Menu item of the section on screen (see assets/js/nav.js). */
#mainmenu > li > a:after {
    content: "";
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 12px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

#mainmenu > li.is-current > a:after {
    opacity: 1;
    transform: scaleX(1);
}

@media (max-width: 767px) {
    #mainmenu > li > a:after {
        right: auto;
        width: 24px;
        bottom: 6px;
    }
}