.animate-underline {
    display: inline-block;
    position: relative;
}

.animate-underline:after {
    content: " ";
    position: absolute;
    width: 100%;
    transform: scaleX(0);
    height: 3px;
    bottom: 0;
    left: 0;
    background-color: #00ffff;
    transform-origin: bottom right;
    transition: transform .25s ease-out
}

.animate-underline:hover:after {
    transform: scaleX(1);
    transform-origin: bottom left
}