Dynamic Class Binding

Master dynamic class binding in Svelte 5: the class attribute, class: directive, component merging, and TypeScript with ClassValue.

24 min read intermediate Reference

Updated

05

APR 2026

Before you read this This article builds on the following topics

Scoped CSS How Svelte scopes CSS at compile time, the three boundary rules, scoped keyframes, CSS nesting, and specificity differences.

16 min
Global Styles Learn about global CSS that reaches beyond component boundaries: :global(), :global{} blocks, keyframes, imports, and when to use each approach.

28 min

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