levels page backgrounds added, css changes for levels

not particularly clean or neat, shall have a closer look tomorrow...
home screen is more done now, quiz on it's way

I need food, so in case someone is looking at this, here the updated
home screen - with 4 different coloured backgrounds only since I only
had 4 different blobs - and the quiz, which still needs work. I don't
know enough logic/condistion stuff to add what's needed to change the
background based on what level you're in... and some other fine-tuning
is needed there too. I'll do some more later and tomorrow.
Broken merge-needs fixing