This extension shows a random HTML tag every time a new tab is opened
Learn HTML faster with Random HTML Tags
Every time you open a new tab, Random HTML Tags will show you a new HTML tag together with its description and a button that will redirect you to Mozilla's website for more information on that specific HTML tag.
If you get tired of opening new tabs to see new HTML tags you can use the "Gimme another one" button and you will get a fresh random HTML tag without opening a new tab.