css之坑

body::-webkit-scrollbar {
  display: none
 /* 隐藏滚动条，但依旧具备可以滚动的功能 */
}

position: fixed;
top:0px;
//bottom: 0;//固定在底部

(function () {
      var t;
      function initHtmlFont(){
          var maxWidth = 640;
          var html = document.documentElement;
          var windowWidth = html.clientWidth;
            var windowWidth = html.clientWidth>maxWidth?maxWidth:html.clientWidth;
         
          html.style.fontSize?=?(windowWidth/640)*200+‘px‘;  
      }
      window.onresize = function(){
        clearTimeout(t);
        t = setTimeout(initHtmlFont,250);
      }
      document.addEventListener(‘DOMContentLoaded‘, function () {
        initHtmlFont();
      }, false);
    })();