-webkit-mask-position-x CSS property
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 -webkit-mask-position-x CSS property sets the initial horizontal position of a mask image.
Syntax
/* Keyword values */
-webkit-mask-position-x: left;
-webkit-mask-position-x: center;
-webkit-mask-position-x: right;
/* <percentage> values */
-webkit-mask-position-x: 100%;
-webkit-mask-position-x: -50%;
/* <length> values */
-webkit-mask-position-x: 50px;
-webkit-mask-position-x: -1cm;
/* Multiple values */
-webkit-mask-position-x:
50px,
25%,
-3em;
/* Global values */
-webkit-mask-position-x: inherit;
-webkit-mask-position-x: initial;
-webkit-mask-position-x: revert;
-webkit-mask-position-x: revert-layer;
-webkit-mask-position-x: unset;
Values
<length-percentage>-
A length indicating the position of the left edge of the image relative to the box's left padding edge. Percentages are calculated against the horizontal dimension of the box padding area. That means, a value of
0%means the left edge of the image is aligned with the box's left padding edge and a value of100%means the right edge of the image is aligned with the box's right padding edge. left-
Equivalent to
0%. center-
Equivalent to
50%. right-
Equivalent to
100%.
Formal definition
| Initial value | 0% |
|---|---|
| Applies to | all elements |
| Inherited | no |
| Percentages | refer to the size of the box itself |
| Computed value | for <length> the absolute value, otherwise a percentage |
| Animation type | discrete |
Formal syntax
-webkit-mask-position-x =
[ <length-percentage> | left | center | right ]#
<length-percentage> =
<length> |
<percentage>
Examples
Horizontally positioning a mask image
.exampleOne {
-webkit-mask-image: url("mask.png");
-webkit-mask-position-x: right;
}
.exampleTwo {
-webkit-mask-image: url("mask.png");
-webkit-mask-position-x: 25%;
}
Specifications
Not part of any standard.
Browser compatibility
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-webkit-mask-position-x
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Non-standard. Check cross-browser support before using.
See also
-webkit-mask-position, -webkit-mask-position-y, -webkit-mask-origin