text: setElementDimensions();
  window.addEventListener("resize", setElementDimensions);
  function setElementDimensions() {
    var width = document.documentElement.clientWidth;
    var height = document.documentElement.clientHeight;
    var block = document.getElementsByTagName("article")[0];
    block.style.width = (width / 50) +"%";
    block.style.height = (height / 50) +"%";
  }