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border-bottom-width

Summary

The border-bottom-width CSS property sets the width of the bottom border of a box.

Syntax

/* Any <length> value */
border-bottom-width: 10em;
border-bottom-width: 3vmax;
border-bottom-width: 6px;

/* A keyword */
border-bottom-width: thin;
border-bottom-width: medium;
border-bottom-width: thick;

border-right-width: inherit;

Values

<br-width>
Is either a non-negative explicit <length> value or a keyword denoting the thickness of the bottom border. The keyword must be one of the following values:
thin
 
A thin border
medium
 
A medium border
thick
 
A thick border
The specification doesn't precisely define the thickness of each of the keywords, which is therefore implementation specific. Nevertheless, it requests that the thickness does follow the thin ≤ medium ≤ thick inequality and that the values are constant on a single document.
inherit
Represents the calculated value of the border-bottom-width of the parent's element.

Formal syntax

<br-width>

where
<br-width> = <length> | thin | medium | thick

Examples

element { 
    border-bottom-width: thin;
    border-bottom-style: solid;
    border-bottom-color: #000;
}

Specifications

Specification Status Comment
CSS Backgrounds and Borders Module Level 3
The definition of 'border-bottom-width' in that specification.
Candidate Recommendation No significant change.
CSS Level 2 (Revision 1)
The definition of 'border-bottom-width' in that specification.
Recommendation Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 1.0 1.0 (1.0) 4.0 3.5 1.0 (85)
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? ? ? ? ?

See also

Document Tags and Contributors

Last updated by: Sebastianz,