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noUnknownPseudoElement

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Diagnostic Category: lint/nursery/noUnknownPseudoElement

Since: v1.8.0

Sources:

Disallow unknown pseudo-element selectors.

For details on known CSS pseudo-elements, see the MDN web docs.

This rule ignores vendor-prefixed pseudo-element selectors.

a::pseudo {}
code-block.css:1:4 lint/nursery/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unexpected unknown pseudo-elements: pseudo

> 1 │ a::pseudo {}
^^^^^^
2 │

See MDN web docs for more details.

Use a known pseudo-elements instead, such as:

- after
- backdrop
- before
- etc.

a::PSEUDO {}
code-block.css:1:4 lint/nursery/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unexpected unknown pseudo-elements: PSEUDO

> 1 │ a::PSEUDO {}
^^^^^^
2 │

See MDN web docs for more details.

Use a known pseudo-elements instead, such as:

- after
- backdrop
- before
- etc.

a::element {}
code-block.css:1:4 lint/nursery/noUnknownPseudoElement ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Unexpected unknown pseudo-elements: element

> 1 │ a::element {}
^^^^^^^
2 │

See MDN web docs for more details.

Use a known pseudo-elements instead, such as:

- after
- backdrop
- before
- etc.

a:before {}
a::before {}
::selection {}
input::-moz-placeholder {}