用户调整微信字体大小导致rem布局错乱问题

ios在body上加入 style="-webkit-text-size-adjust: 100% !import"
android在script中添加函数：

 (function () {
      if (typeof WeixinJSBridge == "object" && typeof WeixinJSBridge.invoke == "function") {
        handleFontSize();
      } else {
        if (document.addEventListener) {
          document.addEventListener("WeixinJSBridgeReady", handleFontSize, false);
        } else if (document.attachEvent) {
          document.attachEvent("WeixinJSBridgeReady", handleFontSize);
          document.attachEvent("onWeixinJSBridgeReady", handleFontSize);
        }
      }
      function handleFontSize() {
        WeixinJSBridge.invoke('setFontSizeCallback', { 'fontSize': 0 });
        WeixinJSBridge.on('menu:setfont', function () {
          WeixinJSBridge.invoke('setFontSizeCallback', { 'fontSize': 0 });
        });
      }
    })();