text: var introText=document.querySelectorAll('.intro-text');
  
  function scrollAppear(){
      for(var i=1; i<introText.length; i++){
          var introPosition=introText[i].getBoundingClientRect().top;
          var screenPosition=window.innerHeight;
          if(introPosition<screenPosition){
              introText[i].classList.add('intro-appear');
          }
          
      }
  }
  window.addEventListener('scroll', scrollAppear);
  function loadAppear(){
      var load=introText[0].classList.add('intro-appear')
      return load
  }
  window.addEventListener('load', loadAppear)
  