.shadow {
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 3px 20px 0 rgba(0, 0, 0, 0.19);
    transition: box-shadow 50ms;
}

.hoverable:hover {
    box-shadow: 0 4px 6px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

      
@keyframes scroll {
    0% { transform: translateY(0); }
    100% { transform: translateY(-100%); }
}