When I started tweaking the theme for WordPress, I started with css, especially the fonts. I wanted the fonts that mimic paper-like experience as much as possible, and although the goal post has shifted quite a lot since, the way I had done fonts on css were almost always the same.
Tagged CSS
How to Adjust Aspect Ratio for Image Class in WordPress
If you are posting regularly on WordPress-run websites, you are most likely also posting an image as visual aid —best way to describe what the post is without a single word. And as I had discussed it in an op-ed, aspect ratio is a thing for modern readers, and images will play a major role in how much space of that screen will be used.