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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The ::grammar-error CSS pseudo-element represents a text segment which the user agent has flagged as grammatically incorrect.

::grammar-error {
  color: green;

Allowable properties

Only a small subset of CSS properties can be used in a rule with ::grammar-error in its selector:




Specification Status Comment
CSS Pseudo-Elements Level 4
The definition of '::grammar-error' in that specification.
Working Draft Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ? ? ? ? ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? ? ? ? ? ?

See also

Document Tags and Contributors

Contributors to this page: fscholz, mfluehr, rolfedh, cvrebert
Last updated by: fscholz,