.ripple {
    position: relative;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
}
.ripple:after {
    content: '';
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgb(0, 0, 0) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
}
.ripple:active:after {
    transform: scale(0, 0);
    opacity: 0.2;
    transition: 0s;
}