.overlay-preview {
	width: 100%;
	height: 30px;
	-moz-border-radius: 4px;
	-webkit-border-radius: 4px;
	border-radius: 4px;
	background-position: 50% 50%;
	border: 1px solid rgba(0, 0, 0, 0.2);
	cursor: pointer;
}

.overlay-tip {
	position: absolute;
	background: rgba(0, 0, 0, 0.8);
	color: white;
	padding: 5px 10px;
	-moz-border-radius: 6px;
	-webkit-border-radius: 6px;
	border-radius: 6px;
	visibility: hidden;
}

.wrapper {
	position: relative;
}