CSS 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 valuenone
Inherited valuesno
Can it be animated?no

These are the allowed values.

ValueDescription
noneNo filter is applied to the backdrop (default)
filterA 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
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.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:


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.