.revealDirTop:after {
    animation-name: blockSlideToTop;
}

@keyframes blockSlideToTop {
	0%{top:auto;bottom:0;height:0%}
	45%{top:auto;bottom:0;height:100%}
	55%{top:0;bottom:auto;height:100%}
	to{top:0;bottom:auto;height:0%}
}