CSS - backdrop-filter Property

September 26, 2024

Categories: CSS Properties, CSS Reference, Reference

Quick Reference

The backdrop-filter property is used to apply a graphical effect to the area underneath an element that is partially transparent.

div {
    background-color: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
}

Default

Default value	none
Inherited values	no
Can it be animated?	no

These are the allowed values.

Value	Description
none	No filter is applied to the backdrop (default)
filter	A space-separated list of filter-functions like: blur() brightness() contrast() drop-shadow() grayscale() hue-rotate() invert() opacity() sepia() saturate() or an url to an SVG filter that will be applied to the backdrop
initial	Sets this property to its default value
inherit	Inherits 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.backdropFilter = 'grayscale(100%)';

<button onclick='my_function()'>Click Here</button>

<script>
function my_function() {
    document.getElementById('my_div').style.backdropFilter = 'grayscale(100%)';
}
</script>

CSS Notes:

The “inherit”, “initial” and “unset” keywords can be used with any CSS property to set its value
In CSS there are many ways to express a color value in a property

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