improve: 订单列表加载中位置居中

src/pages/index/order.vue

@@ -508,6 +508,7 @@ export default {
     align-items: center;
     justify-content: center;
     top: 50%;
+    left: 0;
     position: fixed;
   }
 }

src/pages/mine/order/list.vue

@@ -218,6 +218,7 @@ export default {
       display: flex;
       align-items: center;
       justify-content: center;
+      left: 0;
       margin-top: 300rpx;
       position: absolute;
     }