首页横幅样式/*cssindex_content*/.index_content{background:#FFF;overflow:hidden;z-index:1}/*slider*/.js_banner_box{width:100%;overflow:hidden;z-index:1}.js_banner{overflow:hidden;position:relative;}.js_banner_inner{position:relative;height:400px;margin:0auto}.js_banner_imga{display:block;}