更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/stylehacks/src/plugins/mediaSlash9.js

@@ -0,0 +1,27 @@
+'use strict';
+const BasePlugin = require('../plugin');
+const { IE_5_5, IE_6, IE_7 } = require('../dictionary/browsers');
+const { MEDIA_QUERY } = require('../dictionary/identifiers');
+const { ATRULE } = require('../dictionary/postcss');
+
+module.exports = class MediaSlash9 extends BasePlugin {
+  /** @param {import('postcss').Result} result */
+  constructor(result) {
+    super([IE_5_5, IE_6, IE_7], [ATRULE], result);
+  }
+
+  /**
+   * @param {import('postcss').AtRule} rule
+   * @return {void}
+   */
+  detect(rule) {
+    const params = rule.params.trim();
+
+    if (params.toLowerCase() === 'screen\\9') {
+      this.push(rule, {
+        identifier: MEDIA_QUERY,
+        hack: params,
+      });
+    }
+  }
+};