animate.css/source/flipInY.css

@-webkit-keyframes flipInY {
    0% {
        -webkit-transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    
    40% {
        -webkit-transform: perspective(400px) rotateY(-10deg);
    }
    
    70% {
        -webkit-transform: perspective(400px) rotateY(10deg);
    }
    
    100% {
        -webkit-transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}
@-moz-keyframes flipInY {
    0% {
        -moz-transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    
    40% {
        -moz-transform: perspective(400px) rotateY(-10deg);
    }
    
    70% {
        -moz-transform: perspective(400px) rotateY(10deg);
    }
    
    100% {
        -moz-transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}
@-o-keyframes flipInY {
    0% {
        -o-transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    
    40% {
        -o-transform: perspective(400px) rotateY(-10deg);
    }
    
    70% {
        -o-transform: perspective(400px) rotateY(10deg);
    }
    
    100% {
        -o-transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}
@keyframes flipInY {
    0% {
        transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    
    40% {
        transform: perspective(400px) rotateY(-10deg);
    }
    
    70% {
        transform: perspective(400px) rotateY(10deg);
    }
    
    100% {
        transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}

.flipInY {
	-webkit-backface-visibility: visible !important;
	-webkit-animation-name: flipInY;
	-moz-backface-visibility: visible !important;
	-moz-animation-name: flipInY;
	-o-backface-visibility: visible !important;
	-o-animation-name: flipInY;
	backface-visibility: visible !important;
	animation-name: flipInY;
}