[after beta] revisit overview card formatting

[zkamvar]

There's been some feedback that the overview card text is too squished. For the most part, I agree and felt that it was coded a bit wonky in the first place. It is worthwhile to revisit this, but likely after we run through the beta phase.

It does need revisiting and I will revisit it when I get the chance. For future reference: because the questions/objectives are special to lessons, they are treated with lua filters in {sandpaper} in combination with CSS styling in {varnish}.

Originally posted by @zkamvar in carpentries/workbench#10 (reply in thread)

[zkamvar]

Note: the solution for this will likely be to ensure that the questions and objectives columns are both of equal width (right now, they are a 1:2 ratio).

The reason for this design decison was likely an arbitrary one based on the original parameters we gave for the wireframes (i.e. the questions were far shorter than the objectives in the example we provided). The designer implemented it in a way that was not easy to translate to CSS, so the implementers had to fudge it a bit and we got the 1:2 ratio with the wonky squishiness.