cleaned up index infobar

[alyxbb]

fixes #13

[Keeeeeeeen]

Generally nice, but the text in the get involved box feels a too wide now and hurts readability a bit, maybe we could add a little padding between between the message box and get involved to make the columns a little thinner?

[Keeeeeeeen]

Hey, this creates some weird alignments on mobile (As they stack on top of each other but still pad from the sides of the page), I was playing around earlier and found that adding an empty container between the two existing ones seemed to work better (I don't remember the sizes I used tho so you'll have to play around.

[alyxbb]

attempt 3 🥉