This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The :-moz-submit-invalid CSS pseudo-class is a Mozilla extension that represents any submit <button> on forms whose contents aren't valid based on their validation constraints.

By default, no style is applied. You can use this pseudo-class to customize the appearance of the submit button when there are invalid form fields.


Syntax not found in DB!


Not part of any standard.

Browser compatibilityUpdate compatibility data on GitHub

Chrome Edge Firefox Internet Explorer Opera Safari
:-moz-submit-invalid No No 4 No No No
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
:-moz-submit-invalid No No 4 No No No

See also

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