background-clip

The background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.

If the element has no background-image or background-color, this property will only have a visual effect when the border has transparent regions or partially opaque regions (due to border-style or border-image); otherwise, the border masks the difference.

Note: Because the root element has a different background painting area, the background-clip property has no effect when specified on it. See "The backgrounds of special elements."

Note: For documents whose root element is an HTML element: if the computed value of background-image on the root element is none and its background-color is transparent, user agents must instead propagate the computed values of the background properties from that element’s first HTML <body> child element. The used values of that <body> element’s background properties are their initial values, and the propagated values are treated as if they were specified on the root element. It is recommended that authors of HTML documents specify the canvas background for the <body> element rather than the HTML element.

Syntax

/* Keyword values */
background-clip: border-box;
background-clip: padding-box;
background-clip: content-box;
background-clip: text;

/* Global values */
background-clip: inherit;
background-clip: initial;
background-clip: unset;

Values

border-box
The background extends to the outside edge of the border (but underneath the border in z-ordering).
padding-box
The background extends to the outside edge of the padding. No background is drawn beneath the border.
content-box
The background is painted within (clipped to) the content box.
text This is an experimental API that should not be used in production code.
The background is painted within (clipped to) the foreground text.

Formal definition

Initial valueborder-box
Applies toall elements. It also applies to ::first-letter and ::first-line.
Inheritedno
Computed valueas specified
Animation typediscrete

Formal syntax

<box>#

where
<box> = border-box | padding-box | content-box

Examples

HTML

<p class="border-box">The background extends behind the border.</p>
<p class="padding-box">The background extends to the inside edge of the border.</p>
<p class="content-box">The background extends only to the edge of the content box.</p>
<p class="text">The background is clipped to the foreground text.</p>

CSS

p {
  border: .8em darkviolet;
  border-style: dotted double;
  margin: 1em 0;
  padding: 1.4em;
  background: linear-gradient(60deg, red, yellow, red, yellow, red);
  font: 900 1.2em sans-serif;
  text-decoration: underline;
}

.border-box { background-clip: border-box; }
.padding-box { background-clip: padding-box; }
.content-box { background-clip: content-box; }

.text {
  background-clip: text;
  -webkit-background-clip: text;
  color: rgba(0,0,0,.2);
}

Result

Specifications

Specification Status Comment
CSS Backgrounds and Borders Module Level 3
The definition of 'background-clip' in that specification.
Candidate Recommendation Initial definition.
CSS Backgrounds and Borders Module Level 4
The definition of 'background-clip' in that specification.
Editor's Draft Add text value.

Browser compatibility

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See also