[simonlebo]

A few UX small remarks.

I don't understand why clicking on a selected criteria on the 'Create Your Perfect Programming Test' doesn't deselect it. It made my first interaction weird since Javascript is always selected.

The close button made me close the tab a few times. I was expecting a back behaviour. Not that it matters since I see your site opens its own links in a new tab which is also something I do not like.