.head{background:#fff;display:flex;flex-direction:row;height:450px}.head .head_left_cls{height:69px;margin:auto 0;width:16px}.head .head_left_img{height:69px;margin:auto 0 auto 20px;width:16px}.head .head_img{height:100%;margin-left:5px;margin-right:5px;width:1110px}.head .head_img .head_group{display:flex;flex-direction:row;margin-left:480px;margin-top:14px}.head .head_img .head_img_item{background:#eee;height:197px;margin-left:20px;margin-top:20px;width:350px}.head_img{height:100%;margin-left:5px;margin-right:5px;width:1110px}.head_img .head_img_item{background:#eee;height:197px;margin-left:20px;margin-top:20px;width:350px}