css property

`-webkit-mask-position-y` CSS property

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 of 100% 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

Formal syntax

-webkit-mask-position-y = [ <length-percentage> | top | center | bottom ]#

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

Browser compatibilityCompatibility data is available on the canonical MDN page.