.clear_float {
	clear: both;
	font-size: 1px;
	height: 0;
	width: 0;
	line-height: 1;
	overflow: hidden
}

.clearfix:after {
	content: ".";
	display: block;
	clear: both;
	visibility: hidden;
	line-height: 0;
	height: 0
}
.hidden {
	visibility: hidden
}