.slide_to_top
{
	visibility: hidden;
	visibility: hidden\9;
}

    .slide_to_top.slide_top
{
	visibility: visible;
	animation: slide_top 1s;
}

.slide_to_top::after
{
	content: "";
	display: table;
	clear: both;
}
		
@keyframes slide_top
{
	0%{opacity: 0;
	transform: translateY(50%);}
	
	100%{
		opacity: 1;
		transform: translateY(0)
	}
}