Fix cursor style - Githubissues

Hello again,

This PR aims to fix a few small (styling) issues I noticed on the site:

The page reloading when clicking the copy result button on results.html
The cursor not being a pointer while hovering over .btn elements that aren't wrapped in an anchor tag
The manual styling of .prompt elements in the HTML
cursor not being a pointer while hovering over .prompt elements
(This is just my opinion, but I think it looks better) cursor not being not-allowed while hovering over submitted prompts