CSS Reference

Quick Reference

The mask-position property sets the starting position of a mask image relative to the mask position area. By default, a mask image is placed at the top-left corner of an element, and repeated both vertically and horizontally.

div {
    mask-position: center;
}

Default

Default value0% 0%
Inherited valuesno
Can it be animated?no

These are the allowed values.

ValueDescription
left top
left center
left bottom
right top
right center
right bottom
center top
center center
center bottom
If you only specify one keyword, the other value will be "center"
x% y%The first value is the horizontal position and the second value is the vertical; the top left corner is 0% 0%; the right bottom corner is 100% 100%; if you only specify one value, the other value will be 50% (default value is: 0% 0%)
xpos yposThe first value is the horizontal position and the second value is the vertical.; the top left corner is 0 0; units can be pixels (0px 0px) or any other CSS units; if you only specify one value, the other value will be 50%
initialSets this property to its default value
inheritInherits this property from its parent element

Using JavaScript

The HTML element can also be styled using JavaScript and the element’s id.

document.getElementById('my_div').style.maskPosition = 'center';
<button onclick='my_function()'>Click Here</button>

<script>
function my_function() {
    document.getElementById('my_div').style.maskPosition = 'center';
}
</script>

CSS Notes:


We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.