.revolution > div {
    position: absolute;
    width: 300px;
    left: 50%;
    top: -45%;
    transform: translateX(-50%);
    z-index: -1;
    opacity: 0.25;
}
@media (max-width: 768px) {
    .revolution > div {
        width: 40vw !important;
    }
}