替换生成得rem js

static/js/flexible.js

-(function flexible(window, document) {
-  function resetFontSize() {
-    const size = (document.documentElement.clientWidth / 1920) * 37.5;
-    document.documentElement.style.fontSize = size + 'px';
-  }
 
-  // reset root font size on page show or resize
-  window.addEventListener('pageshow', resetFontSize);
-  window.addEventListener('resize', resetFontSize);
-})(window, document);
+  (function flexible(window, document) {
+    function resetFontSize() {
+      let clientWidth = document.documentElement.clientWidth;
+      if (clientWidth < 1200) {
+        clientWidth = 1200;
+      }
+      const size = (clientWidth / 1920) * 37.5;
+      document.documentElement.style.fontSize = size + 'px';
+    }
+
+    // 在 DOMContentLoaded 事件触发时设置根元素字体大小
+    window.addEventListener('DOMContentLoaded', resetFontSize);
+    // 在 pageshow 和 resize 事件触发时重新设置根元素字体大小
+    window.addEventListener('pageshow', resetFontSize);
+    window.addEventListener('resize', resetFontSize);
+  })(window, document);