[michaelcampbell]

Looks like px if my inspector isn't lying to me. Ctrl-+ and Ctrl-- work fine for me on desktop/chrome.

[beebeepka]

Firefox has always been even better because you can easily scale only the fonts.

[lakpan]

If the website uses viewport units Firefox can’t do it either, IIRC. My guess is that the website uses vw only on “mobile”