.banner_main{width:100%; height:650px; overflow: hidden;}
			.banner_content{width: 1920px; margin-left: -960px;}
			.banner_content > ul{position: relative; white-space: nowrap; height:650px;}
			.banner_content > ul > li{display: inline-block; width: 1920px; height:650px; position: relative;}
			#banner_L_but{position:absolute; z-index: 10; left: 30px; margin-top: 297px; cursor: pointer;}
			#banner_R_but{position:absolute; z-index: 10; right: 30px; margin-top: 297px; cursor: pointer;}
			.banner_select_main{width: 100%; margin-top: -32px; position: relative; z-index: 10;}
			.banner_select_main > img{padding: 3px; cursor: pointer;}