backdrop-filter

A propriedade CSS backdrop-filter permite que você aplique efeitos gráficos, como desfoque ou mudança de cores, na área ao fundo de um elemento. Como ela se aplica a tudo que fica atrás do elemento, é preciso deixá-lo (ou o seu plando de fundo) ao menos parcialmente transparente para poder ver o efeito em ação.

/* Valor de palavra-chave */
backdrop-filter: none;

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

/* Valores <filter-function> */
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%);

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

/* Valores globais */
backdrop-filter: inherit;
backdrop-filter: initial;
backdrop-filter: unset;

Sintaxe

Valores

none: Nenhum filtro é aplicado ao plano de fundo.
<filter-function-list>: Uma lista de <filter-function>s separadas por espaços ou um filtro SVG que será aplicado ao plano de fundo.

Definição formal

Initial value	`none`
Aplica-se a	all elements; In SVG, it applies to container elements excluding the `<defs>` element and all graphics elements
Inherited	não
Computed value	as specified
Animation type	a filter function list

Sintaxe formal

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

<filter-value-list> = 
  [ <filter-function> | <url> (en-US) ]+  

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

<blur()> = 
  blur( <length> (en-US)? )  

<brightness()> = 
  brightness( <number-percentage>? )  

<contrast()> = 
  contrast( <number-percentage>? )  

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

<grayscale()> = 
  grayscale( <number-percentage>? )  

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

<invert()> = 
  invert( <number-percentage>? )  

<opacity()> = 
  opacity( <number-percentage>? )  

<sepia()> = 
  sepia( <number-percentage>? )  

<saturate()> = 
  saturate( <number-percentage>? )  

<color> = 
  <absolute-color-base>  |
  currentcolor           |
  <system-color>         |
  <device-cmyk()>        

<absolute-color-base> = 
  <hex-color> (en-US)    |
  <named-color>  |
  transparent    |
  <rgb()>        |
  <rgba()>       |
  <hsl()>        |
  <hsla()>       |
  <hwb()>        |
  <lab()>        |
  <lch()>        |
  <oklab()>      |
  <oklch()>      |
  <color()>      

<device-cmyk()> = 
  device-cmyk( <cmyk-component>{4} [ / <alpha-value> ]? )  

<rgb()> = 
  rgb( [ <percentage> (en-US) | none ]{3} [ / [ <alpha-value> | none ] ]? )  |
  rgb( [ <number> | none ]{3} [ / [ <alpha-value> | none ] ]? )  

<hsl()> = 
  hsl( [ <hue> | none ] [ <percentage> (en-US) | none ] [ <percentage> (en-US) | none ] [ / [ <alpha-value> | none ] ]? )  

<hwb()> = 
  hwb( [ <hue> | none ] [ <percentage> (en-US) | none ] [ <percentage> (en-US) | none ] [ / [ <alpha-value> | none ] ]? )  

<lab()> = 
  lab( [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ / [ <alpha-value> | none ] ]? )  

<lch()> = 
  lch( [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ <hue> | none ] [ / [ <alpha-value> | none ] ]? )  

<oklab()> = 
  oklab( [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ / [ <alpha-value> | none ] ]? )  

<oklch()> = 
  oklch( [ <percentage> (en-US) | <number> | none ] [ <percentage> (en-US) | <number> | none ] [ <hue> | none ] [ / [ <alpha-value> | none ] ]? )  

<color()> = 
  color( <colorspace-params> [ / [ <alpha-value> | none ] ]? )  

<cmyk-component> = 
  <number>      |
  <percentage> (en-US)  

<alpha-value> = 
  <number>      |
  <percentage> (en-US)  

<hue> = 
  <number>  |
  <angle> (en-US)   |
  none      

<colorspace-params> = 
  <predefined-rgb-params>  |
  <xyz-params>             

<predefined-rgb-params> = 
  <predefined-rgb> [ <number> | <percentage> (en-US) | none ]{3}  

<xyz-params> = 
  <xyz-space> [ <number> | none ]{3}  

<predefined-rgb> = 
  srgb          |
  srgb-linear   |
  display-p3    |
  a98-rgb       |
  prophoto-rgb  |
  rec2020       

<xyz-space> = 
  xyz      |
  xyz-d50  |
  xyz-d65

Exemplo

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);
  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

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

Resultado

Especificações

Specification
Filter Effects Module Level 2 # BackdropFilterProperty

Compatibilidade com navegadores

BCD tables only load in the browser

Veja também

filter (en-US)