-webkit-mask-position-y
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-y CSS property sets the initial vertical position of a mask image.
Syntax
/* Keyword values */
-webkit-mask-position-y: top;
-webkit-mask-position-y: center;
-webkit-mask-position-y: bottom;
/* <percentage> values */
-webkit-mask-position-y: 100%;
-webkit-mask-position-y: -50%;
/* <length> values */
-webkit-mask-position-y: 50px;
-webkit-mask-position-y: -1cm;
/* Multiple values */
-webkit-mask-position-y:
50px,
25%,
-3em;
/* Global values */
-webkit-mask-position-y: inherit;
-webkit-mask-position-y: initial;
-webkit-mask-position-y: revert;
-webkit-mask-position-y: revert-layer;
-webkit-mask-position-y: unset;
Values
<length-percentage>-
A length indicating the position of the top side of the image relative to the box's top padding edge. Percentages are calculated against the vertical dimension of the box padding area. A value of
0%means the top edge of the image is aligned with the box's top padding edge and a value of100%means the bottom edge of the image is aligned with the box's bottom padding edge. top-
Equivalent to
0%. bottom-
Equivalent to
100%. center-
Equivalent to
50%.
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-y =
[ <length-percentage> | top | center | bottom ]#
<length-percentage> =
<length> |
<percentage>
Examples
Vertically positioning a mask image
.exampleOne {
-webkit-mask-image: url("mask.png");
-webkit-mask-position-y: bottom;
}
.exampleTwo {
-webkit-mask-image: url("mask.png");
-webkit-mask-position-y: 25%;
}
Specifications
Not part of any standard.
Browser compatibility
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See also
-webkit-mask-position, -webkit-mask-position-x, -webkit-mask-origin