.qba {
	width: 100%;
	max-width: 1000px;
	margin: 25px auto;
}

#samples .qba:last-of-type {
	margin: 25px auto 0 auto;
}

.ba-bg,.ba-mask {
	top: 0;
	left: 0;
	position: absolute;
}

.ba-bg,.ba-caption,.ba-mask {
	position: absolute;
}

.ba-mask {
	z-index: 100;
	border-right: 3px solid #fff;
	overflow: hidden;
}

.ba-bg {
	z-index: 0;
}

.ba-caption {
	bottom: 10px;
	left: 10px;
	z-index: 120;
	background: #000;
	opacity: .8;
	color: #fff;
	text-align: center;
	padding: 5px 10px;
	display: none;
}

.qba span {
	font-size: 11px;
	padding: 0 0 0 5px;
	vertical-align: top;
}