@-webkit-keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    40% {
        -webkit-transform: translateY(-30px);
        transform: translateY(-30px);
    }
    60% {
        -webkit-transform: translateY(-15px);
        transform: translateY(-15px);
    }
}

@keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
    }
    40% {
        -webkit-transform: translateY(-30px);
        -ms-transform: translateY(-30px);
        transform: translateY(-30px);
    }
    60% {
        -webkit-transform: translateY(-15px);
        -ms-transform: translateY(-15px);
        transform: translateY(-15px);
    }
}

.ani-bounce {
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-name: bounce;
    animation-name: bounce;
}