::-moz-focus-inner

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.

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The ::-moz-focus-inner CSS pseudo-element is a Mozilla extension that represents an inner focus ring of the <button> element as well as the button, submit, reset, and color types of the <input> element.

Note: Using ::-moz-focus-inner with anything than the buttons that support it doesn't match anything and has no effect.

Syntax

css
::-moz-focus-inner {
  /* ... */
}

Example

HTML

html
<input type="submit" value="Input" /> <button type="submit">Button</button>

CSS

css
button::-moz-focus-inner,
input[type="color"]::-moz-focus-inner,
input[type="reset"]::-moz-focus-inner,
input[type="button"]::-moz-focus-inner,
input[type="submit"]::-moz-focus-inner {
  padding-block-start: 0px;
  padding-inline-end: 2px;
  padding-block-end: 0px;
  padding-inline-start: 2px;
  border: 2px dotted red;
}

Result

Specifications

Not part of any standard.

Browser compatibility

See also