isible
			if (visible) {
				d.classList.remove("closed")
				d.style.height = height
			} else {
				d.classList.add("closed")
				d.style.height = "0px"
			}
		})
	  	
	  }
	}	
  
  document.querySelectorAll("pre code").forEach(x => 
  	hljs.highlightBlock(x)
  )
  
</script>
</body>
</html>
