Remove bootstrap, improve readability, reduce file size

Hey! Just saw your project on reddit. It irked me that the biggest file you had was the HTML one, so I shrunk it down by removing bootstrap and adding custom styles.

I saw you had some ASCII art but it's currently underedable since the HTML entities are not converting. You can add it afterwards and just put the characters unescaped, with the meta charset tag the browser just doesn't care :)

Cheers!