text: let bottom = false;
  let scrollMsg = document.querySelector('div#project-footer')
  
  window.onscroll = function(ev) {
      if ((window.innerHeight + window.pageYOffset) >= document.body.offsetHeight) {
          scrollMsg.style.display = 'none';
          bottom=true;
      }
      else if(bottom == true){
          scrollMsg.style.display = 'block';
          bottom = false;
      }
  };