.banner{position:relative}.banner .txt{position:absolute;left:50%;top:50%;margin:-59px 0 0 -253px}.banner .img{width:100%;height:340px;display:block}.menus_box{width:100%;height:58px;opacity:.9;filter:alpha(opacity=90);position:relative}.menus_box .menu_bg{width:100%;height:100%;background:#000}.menus_box .menu{text-align:center;width:100%;position:absolute;bottom:0;left:0;height:58px}.menus_box .menu .menu_item{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;-o-box-sizing:border-box;box-sizing:border-box;height:58px;width:207px;border-top:3px solid transparent;display:inline-block;color:#7d7d7d;line-height:55px;font-size:16px}.menus_box .menu .menu_item:hover{color:#fff}.menus_box .menu .menu_item.cur{background:#2d2d2d;border-top:3px solid #258bff;color:#fff}