Comment out HTML. what I am doing wrong?

Tell us what’s happening:

What I am doing wrong?

Your code so far

<h1>Hello World</h1>

<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>

Your browser information:

Your code passes fine for me. Sometimes the browser glitches. They rebooting. Reset the cache on your browser. Try a different browser.

There is nothing wrong and its a kind of error. However, just try the reset button. and again do whatever you did. I hope it will work.