Changed1
A wide-desktop standard joins the design rules: from 1440px up, text, headings, buttons, the header and the 3D stage scale with the screen, 1.25 times larger by 1800px; at 1920 body text is 21px, section headings 50px, the header 80px.
Every size was a pixel value tuned at 1440, so on a 1920 screen the page sat in the middle at the 1440 size with empty space around it. The sentences keep their own line breaks, so a bigger screen gets bigger text rather than longer lines; the two-column sections give the text column a little more room. What it does not do: nothing changes below 1440, and the phone layout is still the desktop's single column.