@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-10px); }
    40%, 80% { transform: translateX(10px); }
}

.shake {
    animation: shake 0.5s !important;
}

/*@keyframes float {*/
/*    0%, 100% { transform: translateY(0); }*/
/*    50% { transform: translateY(-5px); }*/
/*}*/