修改样式

src/pages/AppPay/AppPay.scss

 .AppPay {
+  .AppPay-info{
+    text-align: center;
+  }
   .AppBackButton {
     background-color: #fff;
     margin: 24rpx 80rpx 0;

src/pages/AppPay/AppPay.tsx

@@ -120,7 +120,6 @@ class AppPay extends Component {
               open-type="exit"
             >
               <Button
-                className="AppBackButton"
                 open-type="launchApp"
                 app-parameter={errorMsg}
                 onError={this.goBackAppError}