#content{
	width: 100%;
	background: url(qbjenglishresourcecms201712bg.jpg) no-repeat;
	background-size: cover;
        filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='/qbjenglish/resource/cms/2017/12/bg.jpg',  sizingMethod='scale');
}
#content .cont{
	width: 1200px;
	margin: 0 auto;
}
.clum1{
	height: 372px;

	margin-bottom: 23px;
}
.clum2{
	height: 320px;
	margin-bottom: 23px;
}
.clum2 .lt{
	width: 520px;
	height: 320px;
	float: left;

}
.clum2 .rt{
	width: 635px;
	height: 320px;
	float: right;

}
.clum3{
	height: 272px;

	margin-bottom: 23px;
}
.clum4{
	height: 283px;

}