backdrop-filter

CSS backdrop-filter 는 요소 뒤 영역에 흐림이나 색상 시프트 등 그래픽 효과를 적용할 수 있는 속성입니다. 요소 "뒤"에 적용하기 때문에, 효과를 확인하려면 요소나 요소의 배경을 적어도 반투명하게는 설정해야 합니다.

css

/* 키워드 값 */
backdrop-filter: none;

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

/* <filter-function> 값 */
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%);

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

/* 전역 값 */
backdrop-filter: inherit;
backdrop-filter: initial;
backdrop-filter: unset;

구문

값

none: 뒤에 아무런 필터도 적용하지 않습니다.
<filter-function-list>: 뒤에 적용할 <filter-function> 또는 SVG필터 (en-US)의 공백 구분 목록입니다.

형식 정의

초기값	`none`
적용대상	all elements; In SVG, it applies to container elements excluding the `defs` (en-US) element and all graphics elements
상속	no
계산 값	as specified
Animation type	a filter function list

형식 구문

backdrop-filter = 
  none                 |
  <filter-value-list>  

<filter-value-list> = 
  [ <filter-function> | <url> ]+  

<filter-function> = 
  <blur()>         |
  <brightness()>   |
  <contrast()>     |
  <drop-shadow()>  |
  <grayscale()>    |
  <hue-rotate()>   |
  <invert()>       |
  <opacity()>      |
  <sepia()>        |
  <saturate()>     

<url> = 
  <url()>  |
  <src()>  

<blur()> = 
  blur( <length>? )  

<brightness()> = 
  brightness( [ <number> | <percentage> ]? )  

<contrast()> = 
  contrast( [ <number> | <percentage> ]? )  

<drop-shadow()> = 
  drop-shadow( [ <color>? && <length>{2,3} ] )  

<grayscale()> = 
  grayscale( [ <number> | <percentage> ]? )  

<hue-rotate()> = 
  hue-rotate( [ <angle> | <zero> ]? )  

<invert()> = 
  invert( [ <number> | <percentage> ]? )  

<opacity()> = 
  opacity( [ <number> | <percentage> ]? )  

<sepia()> = 
  sepia( [ <number> | <percentage> ]? )  

<saturate()> = 
  saturate( [ <number> | <percentage> ]? )  

<url()> = 
  url( <string> (en-US) <url-modifier>* )  |
  <url-token>                      

<src()> = 
  src( <string> (en-US) <url-modifier>* )

예제

CSS

css

.box {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 5px;
  font-family: sans-serif;
  text-align: center;
  line-height: 1;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  max-width: 50%;
  max-height: 50%;
  padding: 20px 40px;
}

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

body {
  background-image: url(https://picsum.photos/id/1080/6858/4574),
    linear-gradient(rgb(219, 166, 166), rgb(0, 0, 172));
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
}

.container {
  align-items: center;
  display: flex;
  justify-content: center;
  height: 100%;
  width: 100%;
}

HTML

html

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

결과

명세

Specification
Filter Effects Module Level 2 # BackdropFilterProperty

브라우저 호환성

BCD tables only load in the browser

같이 보기

filter