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mask-clip

The mask-clip CSS property determines the area which is affected by a mask. The painted content of an element must be restricted to this area.

/* <geometry-box> values */
mask-clip: content-box;
mask-clip: padding-box;
mask-clip: border-box;
mask-clip: margin-box;
mask-clip: fill-box;
mask-clip: stroke-box;
mask-clip: view-box;

/* Keyword values */
mask-clip: no-clip;

/* Non-standard keyword values */
-webkit-mask-clip: border;
-webkit-mask-clip: padding;
-webkit-mask-clip: content;
-webkit-mask-clip: text;

/* Multiple values */
mask-clip: padding-box, no-clip;
mask-clip: view-box, fill-box, border-box;

/* Global values */
mask-clip: inherit;
mask-clip: initial;
mask-clip: unset;

Syntax

One or more of the keyword values listed below, separated by commas.

Values

content-box
The painted content is clipped to the content box.
padding-box
The painted content is clipped to the padding box.
border-box
The painted content is clipped to the border box.
margin-box
The painted content is clipped to the margin box.
fill-box
The painted content is clipped to the object bounding box.
stroke-box
The painted content is clipped to the stroke bounding box.
view-box
Uses the nearest SVG viewport as reference box. If a viewBox attribute is specified for the element creating the SVG viewport, the reference box is positioned at the origin of the coordinate system established by the viewBox attribute and the dimension of the reference box is set to the width and height values of the viewBox attribute.
no-clip
The painted content is not clipped.
border
This keyword behaves the same as border-box.
padding
This keyword behaves the same as padding-box.
content
This keyword behaves the same as content-box.
text
This keyword clips the mask image to the text of the element.

Formal definition

Initial value border-box
Applies to all elements; In SVG, it applies to container elements excluding the defs element and all graphics elements
Inherited no
Computed value as specified
Animation type discrete

Formal syntax

[ <geometry-box> | no-clip ]#

where
<geometry-box> = <shape-box> | fill-box | stroke-box | view-box

where
<shape-box> = <box> | margin-box

where
<box> = border-box | padding-box | content-box

Examples

Clipping a mask to the border box

Change the mask-clip value to any of the allowed values detailed above. If viewing the example in a Chromium-based browser change the value of -webkit-mask-clip.

Specifications

Specification Status Comment
CSS Masking Module Level 1
The definition of 'mask-clip' in that specification.
Candidate Recommendation Initial definition

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
mask-clip 1
Prefixed
1
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
79
Prefixed
79
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
53
53
20 — 53
Disabled
Disabled From version 20 until version 53 (exclusive): this feature is behind the layout.css.masking.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No 15
Prefixed
15
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
4
Prefixed
4
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
border 1 79 No No 15 4
content</content> 1 79 No No 15 4
padding 1 79 No No 15 4
text 1 79 No No 15 4
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
mask-clip 2
Prefixed
2
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
18
Prefixed
18
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
53
53
20 — 53
Disabled
Disabled From version 20 until version 53 (exclusive): this feature is behind the layout.css.masking.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
14
Prefixed
14
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
3.2
Prefixed
3.2
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
1.0
Prefixed
1.0
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
border 2 18 No 14 3.2 1.0
content</content> 2 18 No 14 3.2 1.0
padding 2 18 No 14 3.2 1.0
text 2 18 No 14 3.2 1.0

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/mask-clip