@keyframes spin {
    to {

        transform: rotate( 360deg );

    }
}
@keyframes pulse {
    50% {

        opacity: .5;

    }
}
@keyframes ping {
    75%, 100% {

        transform: scale( 2 );
        opacity: 0;

    }
}
@keyframes bounce {
    0%, 100% {

        transform: translateY( -25% );
        animation-timing-function: cubic-bezier( .8, 0, 1, 1 );

    }
    50% {

        transform: none;
        animation-timing-function: cubic-bezier( 0, 0, .2, 1 );

    }
}