aside.listbox {
	width: 24%;
	height: 525px;
	margin: 0;
	padding: 0 15px 15px 15px;
	line-height: 35px;
	position: relative;
	z-index: -0;
	line-height: 40px;
}

aside.listbox div {
	padding: 15px;
}
.col-center-block {
	float: none;
	display: block;
	margin-left: auto;
	margin-right: auto;
}