content.md 626 B

The baseline is the invisible line upon which letters rest. It’s used as a point from which other elements are measured, such as line-height and x-height.

![On the left, the word “hey” set in large type, with its vertical metrics shown and the baseline highlighted. On the right, a paragraph of smaller type, with the baseline shown for each line.](images/thumbnail.svg)

A baseline grid refers to the vertical space between the baselines in a block of text; e.g. a 16 pixel baseline grid means there’s a baseline every 16 vertical pixels.