CSS Unit Rulebook

What does each CSS unit come to, and what changes it?

Every CSS length is measured against something: the CSS pixel, a font, the window, a container, or free space in a grid. Pick the right reference and the unit follows.

This book covers all 63 CSS units. For each one, it gives the formula, what changes the value and what does not, when to reach for it, and where it goes wrong. Claims about browser behavior come with the engine and version they were measured in.

Inside:
A one-page short version and a table from task to unit
Seven chapters, one per family of units, from px to the container units
Math functions, everyday patterns, and how units affect accessibility
Browser support by version, conversion tables, glossary, and index

About the author
Konstantin Beregovoy is a software engineer with 20 years of programming experience. He was the founding engineer of a fintech startup and an early engineer at Perimeter 81, which Check Point acquired. Accessibility is his field: he contributes to the accessibility validator of Wix's Jay Framework. He measured every browser claim in this book himself.