Reduce size of vote counts in post list so they fit on one line

[cellio]

https://meta.codidact.com/posts/285132

I acknowledge that the voting on that post is controversial, but the post presents a few points and I'm pulling out one for this issue.

Can we reduce the size of the text for the upvote/downvote counts in post lists only, so that it fits on one line below the thermostat instead of two? For example, "+2 / -1" instead of "2" on one line and then "-1" on the next.

Vote counts are important, but they feel a little shouty -- they're bigger than the text in the titles.

We already show the votes in one line (next to the thermostat) on small viewports, and nobody's complained about that layout.

I don't know if this is a qpixel change or a co-design change; if the latter, let's migrate this issue to that repo.