background-clip

background-clip

The background-clip CSS property specifies whether an element's background, either the color or image, extends underneath its border.

If no background image or color is set, 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 covers up the difference-

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

No background is drawn below the border (background extends to the outside edge of the padding).

content-box

The background is painted within (clipped to) the content box.

text

The background is painted within (clipped to) the foreground text.

Formal syntax

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

Examples

HTML content

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

CSS content

p {
   border: 10px navy;
   border-style: dotted double;
   margin: 1em;
   padding: 2em;
   background: #F8D575;
}
.border-box { background-clip: border-box; }
.padding-box { background-clip: padding-box; }
.content-box { background-clip: content-box; }

Output

Specifications

Browser compatibility

1. Webkit also supports the prefixed version of this property, and in that case, in addition to the current keywords, the alternative synonyms are: padding, border, and content.

2. Gecko supported, from version 1.1 to version 1.9.2, which corresponds to Firefox 1.0 to 3.6 included, a different and prefixed syntax: -moz-background-clip: padding | border.

3. In IE 7 and IE 9 of Internet Explorer, it always behaved like background-clip: padding if overflow: hidden | auto | scroll

4. Support the prefixed version of the property only; according to the official blog, WebKit does not include text decorations or shadows in the clipping.

5. In Firefox 48, it was not activated by default and its support could be activated by setting layout.css.background-clip-text.enabled pref to true.

See also

• clip
• CSS Box Model