CSS Reference Handbook — 2026 Edition A complete reference covering CSS from fundamentals through the latest 2026 specification additions. 34 sections spanning selectors and specificity, the box model, typography, color, Flexbox, Grid, positioning, transforms, transitions, animations and keyframes, SVG styling and animation, custom properties, and modern at-rules. Includes dedicated coverage of features that reached browser support in 2026: native CSS nesting, container queries, anchor positioning, the View Transitions API, @starting-style, color-mix(), and customizable native <select> elements. Every section includes working code examples with syntax highlighting, property reference tables, and live visual demonstrations of animations, easing curves, and SVG techniques. Closes with a 32-term glossary and notes on what's intentionally out of scope, plus resources for staying current as the spec evolves. Built for developers who want both a fast lookup reference and the underlying model — not just what a property does, but why it behaves that way.