Web/CSS/-moz-outline-radius

Non-standard 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.

In Mozilla applications like Firefox, the -moz-outline-radius CSS shorthand property can be used to give an element's outline rounded corners.

/* One value */
-moz-outline-radius: 25px;

/* Two values */
-moz-outline-radius: 25px 1em;

/* Three values */
-moz-outline-radius: 25px 1em 12%;

/* Four values */
-moz-outline-radius: 25px 1em 12% 4mm;

/* Global values */
-moz-outline-radius: inherit;
-moz-outline-radius: initial;
-moz-outline-radius: unset;

Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

Values

Elliptical outlines and <percentage> values follow the syntax described in border-radius.

One, two, three or four <outline-radius> values, represents one of:

<length>: See <length> for possible values.
<percentage>: A <percentage>; see border-radius for details.

If a single value is set, it applies to all 4 corners.
If two values are set, the first one applies to the top-left and bottom-right corners and the second one to the top-right and bottom-left corners.
If three values are set, the first one applies to the top-Left corner, the second one to the top-right and bottom-left corners and the third one to the bottom-right corner.
If four values are set, the first one applies to the top-left corner, the second one to the top-right corner, the third one to the bottom-right corner and the fourth one to the bottom-left corner.

Formal definition

Initial value	as each of the properties of the shorthand: `-moz-outline-radius-topleft`: `0` `-moz-outline-radius-topright`: `0` `-moz-outline-radius-bottomright`: `0` `-moz-outline-radius-bottomleft`: `0`
Applies to	all elements
Inherited	no
Percentages	as each of the properties of the shorthand: `-moz-outline-radius-topleft`: refer to the corresponding dimension of the border box `-moz-outline-radius-topright`: refer to the corresponding dimension of the border box `-moz-outline-radius-bottomright`: refer to the corresponding dimension of the border box `-moz-outline-radius-bottomleft`: refer to the corresponding dimension of the border box
Computed value	as each of the properties of the shorthand: `-moz-outline-radius-topleft`: as specified `-moz-outline-radius-topright`: as specified `-moz-outline-radius-bottomright`: as specified `-moz-outline-radius-bottomleft`: as specified
Animation type	as each of the properties of the shorthand: `-moz-outline-radius-topleft`: a length, percentage or calc(); `-moz-outline-radius-topright`: a length, percentage or calc(); `-moz-outline-radius-bottomright`: a length, percentage or calc(); `-moz-outline-radius-bottomleft`: a length, percentage or calc();

Formal syntax

<outline-radius>{1,4} [ / <outline-radius>{1,4} ]?where <outline-radius> = <length> | <percentage>

Examples

Rounding an outline

Note: This example will not display the desired effect if you are viewing this in a browser other than Firefox.

HTML

<p>This element has a rounded outline!</p>

CSS

p {
  margin: 5px;
  border: 1px solid black;
  outline: dotted red;
  -moz-outline-radius: 12% 1em 25px;
}

Result

Notes

dotted or dashed radiused corners were rendered as solid until Firefox 50, bug 382721
Future versions of Gecko/Firefox may drop this property completely. See bug 593717.

Specifications

Not part of any standard.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`-moz-outline-radius` Deprecated'Non-standard'	Chrome No support No	Edge No support No	Firefox Full support 1	IE No support No	Opera No support No	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 4	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Non-standard. Expect poor cross-browser support.': Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.': Deprecated. Not for use in new websites.