<!--h1>Hello World</h1>
<!-->CatPhotoApp-->
<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>-->
<!--comment your h1, h2 and p elements.-->
Your browser information:
User Agent is: Mozilla/5.0 (X11; CrOS armv7l 12739.111.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.162 Safari/537.36.
It states you need to uncomment all those tags. Thus you need to remove the start comment: "<!--" and the end comment "-->" that surrounds those blocks, leaving everything else the same.
Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.-->
Hello World
Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.-->