调整样式

src/pages/AppPay/AppPay.scss

 .AppPay {
   .AppBackButton {
-    background-color: #456beb;
-    color: #fff;
-    height: 82rpx;
-    line-height: 82rpx;
-    font-size: 28rpx;
-    text-align: center;
-    text-decoration: none;
-    border-radius: 5px;
-    overflow: hidden;
+    background-color: #fff;
     margin: 24rpx 80rpx 0;
   }
 }

src/pages/AppPay/AppPay.tsx

@@ -114,7 +114,11 @@ class AppPay extends Component {
         {showBack && (
           <View className="AppPay-info">
             支付成功
-            <Navigator target="miniProgram" open-type="exit">
+            <Navigator
+              className="AppBackButton"
+              target="miniProgram"
+              open-type="exit"
+            >
               <Button
                 className="AppBackButton"
                 open-type="launchApp"
@@ -129,9 +133,12 @@ class AppPay extends Component {
         {showError && (
           <View className="AppPay-info">
             支付失败
-            <Navigator target="miniProgram" open-type="exit">
-              <Button
+            <Navigator
               className="AppBackButton"
+              target="miniProgram"
+              open-type="exit"
+            >
+              <Button
                 open-type="launchApp"
                 app-parameter={errorMsg}
                 onError={this.goBackAppError}