Click space! Full screen works best.
There is a thing you can do on Google which is a keyboard shortcut that lets you change around the code on a website (it does not change the actual code and there is no way anyone else will see these projects on the homepage unless they actually get featured and also if you reload the page it goes back to normal). On a computer that uses does not have a command key, do ctrl+shift+c or ctrl+shift+i. On a computer that does have a command key, do command+shift+c or command+shift+i. On any computer, you can right click on the screen and click "Inspect", also. You can do that with something like an iPad that does not have keys. Remember, you HAVE to be on a Google page for it to work. I might be wrong about some of this stuff, so you can tell me if it doesn't work.