Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
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.
:-moz-submit-invalid {
/* ... */
}
Not part of any standard.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
:-moz-submit-invalid |
No | No |
88From Firefox 88 the feature has been placed behind a flag. See bug 1694129. |
No | No | No | 4–88From version 88, the feature has been withdrawn. See bug 1694129. |
No | No | No | No | No |
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https://developer.mozilla.org/en-US/docs/Web/CSS/:-moz-submit-invalid