.csce120 {
    animation-duration: 2s;
    animation-name: bounceIn;

/*    Shorthand syntax*/    
/*    animation: bounceIn 2s; */
}
@keyframes bounceIn {
    0% {
        transform: scale(0.1);
        opacity: 0;
    }

    50% {
        transform: scale(0.5);  
        opacity: 1;
    }

    70% {
        transform: scale(0.7);
    }
    9% {
        transform: scale(-1.2);
    }
    100% {
        transform: scale(1.0);
    }
}