-moz-outline-radius

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.

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

Note: 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:
Applies to all elements
Inherited no
Percentages as each of the properties of the shorthand:
Computed value as each of the properties of the shorthand:
Animation type as each of the properties of the shorthand:

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

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
-moz-outline-radius
No
No
1-88
From Firefox 88, outline now follows the shape created by border-radius automatically, so this property is no longer needed (see bug 1694146).
No
No
No
No
No
4-88
From Firefox 88, outline now follows the shape created by border-radius automatically, so this property is no longer needed (see bug 1694146).
No
No
No

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/-moz-outline-radius