text: /* function display_elt(elt_class, time) {
      setTimeout(function() {
          document.querySelector(elt_class);
      }, time)
  }
  
  var time_int = 0;
  divs = ['elt1', 'elt2', 'elt3'];
  
  for (let i = 0; i < 4; i++) {
      time_int += 0.5;
  
      function display_elt(elt_class[i], time_int);
  } */