> What's extremely interesting is that on my laptop, HN is 12px when Firefox is full screen, but 13.33px when Firefox only uses the left or right half of my scr

> What's extremely interesting is that on my laptop, HN is 12px when Firefox is full screen, but 13.33px when Firefox only uses the left or right half of my screen. Yeah -- this is a common strategy for mobile rendering which on the face of it seems quite counterintuitive, but actually isn't.