backdrop-filter

The backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.

Syntax

/* Keyword value */
backdrop-filter: none;

/* URL to SVG filter */
backdrop-filter: url(commonfilters.svg#filter);

/* <filter-function> values */
backdrop-filter: blur(2px);
backdrop-filter: brightness(60%);
backdrop-filter: contrast(40%);
backdrop-filter: drop-shadow(4px 4px 10px blue);
backdrop-filter: grayscale(30%);
backdrop-filter: hue-rotate(120deg);
backdrop-filter: invert(70%);
backdrop-filter: opacity(20%);
backdrop-filter: sepia(90%);
backdrop-filter: saturate(80%);

/* Multiple filters */
backdrop-filter: url(filters.svg#filter) blur(4px) saturate(150%);

/* Global values */
backdrop-filter: inherit;
backdrop-filter: initial;
backdrop-filter: revert;
backdrop-filter: revert-layer;
backdrop-filter: unset;

Values

none: No filter is applied to the backdrop.
<filter-function-list>: A space-separated list of <filter-function>s or an SVG filter that will be applied to the backdrop. CSS <filter-function>s include blur(), brightness(), contrast(), drop-shadow(), grayscale(), hue-rotate(), invert(), opacity(), saturate(), and sepia().

Formal definition

Initial value	none
Applies to	All elements. In SVG, it applies to container elements without the defs element and all graphics elements
Inherited	no
Computed value	as specified

Formal syntax

none | <filter-value-list>

Examples

CSS

.box {
  background-color: rgb(255 255 255 / 0.3);
  backdrop-filter: blur(10px);
}

body {
  background-image: url("anemones.jpg");
}

html,
body {
  height: 100%;
  width: 100%;
}

.container {
  background-size: cover;
  align-items: center;
  display: flex;
  justify-content: center;
  height: 100%;
  width: 100%;
}
.box {
  border-radius: 5px;
  font-family: sans-serif;
  text-align: center;
  max-width: 50%;
  max-height: 50%;
  padding: 20px 40px;
}

HTML

<div class="container">
  <div class="box">
    <p>backdrop-filter: blur(10px)</p>
  </div>
</div>

css properties backdrop-filter