//绂佹鍙屾寚鏀惧ぇ
 document.documentElement.addEventListener('touchstart', function (event) {
  if (event.touches.length > 1) {
      event.preventDefault();
  }
}, {passive:false});
// 绂佹鍙屽嚮鏀惧ぇ
let lastTouchEnd = 0;
document.documentElement.addEventListener('touchend', function (event) {
  var now = Date.now();
  if (now - lastTouchEnd <= 300) {
      event.preventDefault();
  }
  lastTouchEnd = now;
}, {passive:false});
document.addEventListener('gesturestart', function (event) {
  event.preventDefault();
});
function setRem () {
  // 鍩哄噯澶у皬
  baseSize = 100;
  let basePc = baseSize / 1920; //琛ㄧず1920鐨勮璁″浘,浣跨敤100PX鐨勯粯璁ゅ€
  if(window.innerWidth<950){
    basePc=baseSize/375
  }
  
  let vW = window.innerWidth; // 褰撳墠绐楀彛鐨勫搴
  let rem = vW * basePc; // 浠ラ粯璁ゆ瘮渚嬪€间箻浠ュ綋鍓嶇獥鍙ｅ搴?寰楀埌璇ュ搴︿笅鐨勭浉搴攆ont-size鍊
  if(rem<70&&rem>50&&window.innerWidth>950){
    rem=70
  }else{
    rem=rem
  }
  document.documentElement.style.fontSize =  rem + "px";
}
  
// 鍒濆鍖
setRem();
  
// 鏀瑰彉绐楀彛澶у皬鏃堕噸鏂拌缃 rem
window.onresize = function () {
  setRem()
};