feat: 调整图片样式

src/web/templates/frontRouter/wx/activity/free/20250421.html

@@ -12,9 +12,14 @@
     <script src='{{Msg "seo" "cdn"}}/big-member/js/rem.js?v={{Msg "seo" "version"}}'></script>
     <!--E-当前页面的css资源-->
     <style>
+      body, main {
+        width: 100%;
+        height: 100%;
+      }
       .h5-img {
         display: block;
         width: 100%;
+        height: 100%;
         -webkit-user-drag: none;
       }
     </style>