.upload-demo{margin:0 auto}.vv{border:1px dashed #e4e4e4;width:360px;height:50px;border-radius:5px;margin-bottom:10px;position:relative;top:0;left:0}.vv:hover{border:1px dashed #0cabff}.vv pre{overflow:auto}.vv img,.vv pre{width:0;height:0}.v_pic_list{width:100%;display:flex;flex-direction:row;margin-top:10px}.v_pic_list .v_pic_item{margin-right:10px;position:relative;border-radius:5px;border:1px solid #e4e4e4;width:52px;height:52px}.v_pic_list .v_pic_item .i_img{width:50px;height:50px;border-radius:5px}.v_pic_list .v_pic_item .v_cv{width:20px;height:20px;background:rgba(0,0,0,.4);border-radius:0 2px 0 100px;position:absolute;top:0;right:0;transition:opacity .3s}.v_pic_list .v_pic_item i{position:absolute;top:1px;right:1px;font-size:14px;color:#fff;opacity:1;transition:opacity .3s}.v_pic_list .v_pic_item:hover .v_cv{opacity:1}