CSS Pseudo-Elements Module Level 4 by World Wide Web Consortium
= CSS Pseudo-Elements Module Level 4 by World Wide Web Consortium
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https://www.w3.org/TR/2025/WD-css-pseudo-4-20250627/
Working Draft, 27 June 2025. Abstract and generated-content sections define pseudo-elements, including ::before/::after; typographic pseudo-elements include ::first-line. Use established examples and distinguish rendered pseudo-elements from ordinary DOM children.