#box5 div{
	position:absolute;
        background: #f6f6f6;
	width:100%;
	height:300px;
}
#box5 h3{
	padding:0 0 10px 0;
}
#box5 img{
	position:static;
	/* float:left; 
	width:150px;
	height:80px; */
	margin:0 0 5px 0;
}
.mask{
	position:relative;
	width:100% ;
	height:300px;
	overflow:hidden;
}
.mask img{
	position:absolute;
	display:block;
	border:none;
}