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CSS Pseudo-class / Element

:where()

Logical

Same as :is() but with zero specificity, making it easy to override.

Syntax

:where(selector1, selector2) { }

Example

:where(h1, h2, h3) { margin: 0; }

Common use cases

  • CSS resets and base styles
  • Applying default styles that are easy to override
  • Utility classes with low specificity

Practical developer insight

:where() is perfect for base/reset styles — its zero specificity means any other rule will override it without needing !important.

Related

:is():not():has()