One thing I noticed long time ago is that on 27″ 1080p monitor often websites look kinda a little big, because they’re optimized for smaller screens like 20″ 1080p.
And it made me thinking that everyone optimizes websites for different screen resolutions but never for different pixel sizes. For example, 1 pixel on my monitor is about 0.3113 mm² in size, but then there are 5″ phones with 1080p res, pixels of which are 0.05625 mm² in size, which is ~6 times smaller than on my screen.
I wonder if people will ever start optimizing websites for different pixel sizes.
I think css-tricks looks Ok-ish on 17-20″ monitors, because of smaller pixel sizes on these monitors.