CSS

CSS backdrop-filter

div.transbox {
  background-color: rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

backdrop filter css

/* 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: unset;

how we use backdrop-filter css property

<div class="container">
  <div class="box">
    <p>backdrop-filter: blur(5px)</p>
  </div>
</div>

backdrop filter css

backdrop-filter might create a lag effect on your page while scrolling