Fix responsiveness for the Blog page

[raajtram]

The ​Blog Page's responsiveness is broken, primarily due to the <tables> in the ​WordPress User Survey Data for 2015-2017 post.

​Page 2 of the blog (or really, any other page where posts don't contain tables) is fine. So the culprit is indeed the table(s).

A "quick-fix" or hack would be to stop the overflow on the column, and that works for most of the tables. However, there are a few tables in there which are not 100% responsive (I'm not sure why).

[raajtram]

Prevent tables from breaking responsiveness

[obenland]

I'm leaning towards not fixing it, but rather live with it until we redo the News theme and handle tables properly. It's just this one post that breaks it, and it doesn't break it in a way that would make the site unusable on small screens. Thoughts?

[ocean90]

A better fix might be to limit the width of the table but still make the content fully visible by allowing the table to be scrolled:

table {
	overflow-x: auto;
	max-width: calc( 100vw - 28px );
}

[ocean90]

Added the quick fix to customizer's Additional CSS. Should be good for now.