style: 修改下载移动端程序的图片样式

src/views/Layout/src/components/Header/components/DownloadKLNPortal.vue

@@ -45,6 +45,8 @@ defineExpose({
       img {
         width: 140px;
         height: 140px;
+        margin-bottom: 5px;
+        border-radius: 12px;
       }
     }
   }