CSS tweaks

IMHO the two new pieces should be denoted somehow as different elements.
At the moment they are too close to body text and so the user requires more cycles to parse the page in terms of what it is, where to click, what they are being told etc. Given that this is right at the top it may matter more than were it later on.

Secondary nit: the spacing between the tweet/para above and CCloud link/buttons is also inconsistent and jars. Perhaps wrap the CCloud link text to just be beneath the ccloud button only?