Pls, my code dont run wen I use the playground

Answer 1

you have nothing to show. try to add some text or style

Answer 2

div is a container.. it is present in the output...
but u e unable to see it because the container is empty.. neither any css is applied to it.. just try adding border or background color to it you will see the container

Answer 3

You have nothing to display... Page title is only shown on the browser tab.