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Font-size: relative sizing needs a reference

Publisher: ResumeMaker • 1 source

Published: 23 Oct 2026 08:23 · Updated: 23 Oct 2026 08:23

AI source check: 22 Oct 2026 16:54. This is not editorial approval.

In a few sentences

In brief

font-size sets the font's size. Relative units need a reference: em used for font-size is calculated against the parent's font size.

Useful to know

font-size sets the font's size. Relative units need a reference: em used for font-size is calculated against the parent's font size. [1]

Nested components with repeated increases can become unexpectedly large. Inspect inheritance rather than correcting every heading separately, and check that text remains usable when the reader enlarges it.

Sources

For further detail and to check the information:

  1. [1] MDN — CSS font-size ↗