.delay1s{
    -webkit-animation-delay: 1s; /* Chrome, Safari, Opera */
    animation-delay: 1s;
}
.delay2s{
    -webkit-animation-delay: 2s; /* Chrome, Safari, Opera */
    animation-delay: 2s;
}

.delay3s{
    -webkit-animation-delay: 3s; /* Chrome, Safari, Opera */
    animation-delay: 3s;
}