.login-form{margin:0 auto}.login-form-qrcode{margin:0 auto;height:200px;text-align:center}.login-form-qrcode-bg{height:100%;position:absolute;width:100%;top:0}.login-form-qrcode-mask{height:100%;position:absolute;text-align:center;width:100%;background:hsla(0,0%,100%,.9)}.login-form-qrcode-invalid{position:absolute;top:70px;text-align:center;width:100%}.login-form-qrcode img{border:1px solid #e2e2e2;box-sizing:border-box;margin:auto;padding:8px}