.collapse {
	display: none;
}
.collapsing {
	overflow-x: hidden;
	-webkit-transition: height 0.3s ease-in-out;
	-moz-transition: height 0.3s ease-in-out;
	-o-transition: height 0.3s ease-in-out;
	transition: height 0.3s ease-in-out
}