#box8{
	position:absolute;
	width:800px;
	height:245px;
}
#box8 div{
	width:800px;
	height:245px;
	float:left;
}
	
.sample8 .mask1{
	border-top:1px solid #ccc;
	border-bottom:1px solid #ccc;
}

.mask1{
	position:relative;
	width:800px;
	height:245px;
	overflow:hidden;
}