Baseline

The baseline is the fixed invisible line that serves as the base for letters. The baseline is used as a measurement for line height and x-height. 

Descendent characters such as lowercase g and p extend below the baseline, while rounded characters such as C and 0 extend slightly below it. In typography, the baseline exists in relation to other principal line terms, including: 

The baseline grid is the vertical space between baselines in a text block, the size of which depends on the number of vertical pixels in the text box. Most typefaces adhere to a baseline. However, East Asian scripts don’t have a baseline since each glyph sits in a square box. 

Learn more about typography with Webflow University’s lessons on custom fonts and advanced typography.

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