Bugzilla

(In reply to Daniel Holbert [:dholbert] from comment #1)
> Thanks for the bug report! I can reproduce the difference vs. e.g. Chrome here.  (For reference, Chrome's minimum font size setting is at `chrome://settings/fonts`.)

Filling in Safari details for completeness (Safari 17.5):
- The relevant minimum-font-size setting is In Safari Preferences, in the "Advanced" tab -- it's the first checkbox next to Accessibility there, with label "Never use font sizes smaller than [...]"
- Their behavior is different from Chrome!  Tor them, the minimum font-size *does* seem to influence their `em` sizing.  If I load my testcase with a minimum font-size of 10px, the console output shows `establishes an em unit of 10px` for every single section; and all of the blue rects look visually the same width -- they're all 10px wide, instead of having the width of the raw font-size value.

(In reply to Daniel Holbert [:dholbert] from comment #1)
> Thanks for the bug report! I can reproduce the difference vs. e.g. Chrome here.  (For reference, Chrome's minimum font size setting is at `chrome://settings/fonts`.)

Filling in Safari details for completeness (Safari 17.5):
- The relevant minimum-font-size setting is In Safari Preferences, in the "Advanced" tab -- it's the first checkbox next to Accessibility there, with label "Never use font sizes smaller than [...]"
- Their behavior is different from Chrome!  For them, the minimum font-size *does* seem to influence their `em` sizing.  If I load my testcase with a minimum font-size of 10px, the console output shows `establishes an em unit of 10px` for every single section; and all of the blue rects look visually the same width -- they're all 10px wide, instead of having the width of the raw font-size value.