.main{width:60%;margin:10% auto;padding:20% auto;background:#f9f9fb;text-align:center;border-radius:5px;display:block}.main .top{display:block;height:50px;line-height:50px;margin:20px 0 20px 0}.qrcode_box{width:100%}.qrcode_box img{display:block;margin:50px auto;border:1px solid #cfcbcb;border-radius:5px}.qrcode_box span{text-align:center}.qrcode_box canvas{display:none}