Rubber Band
Vertical stretch then snap back.
Preview
Tune parameters
Full code
/* Rubber Band */
@keyframes rubber {
0%, 100% { transform: scale(1, 1); }
35% { transform: scale(1.2, .8); }
70% { transform: scale(.9, 1.1); }
}
.rubber { animation: rubber .9s cubic-bezier(.34,1.56,.64,1); }