Configurable text width

[firke]

Hello,
Love the theme, thank you very much for supporting it!

I have a question, if it is possible to adjust width of content/page. I use a wide monitor, and for some pages would like to extend width of it if possible. I've not found a config item to change it, but perhaps I've just missed it.

This is an article and I have a markdown table below, although any text would be constrained to that width as well.

[McShelby]

This is a duplicate of #752