column-rule

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.

The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.

Try it

Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

css
column-rule: dotted;
column-rule: solid 8px;
column-rule: solid blue;
column-rule: thick inset blue;

/* Global values */
column-rule: inherit;
column-rule: initial;
column-rule: revert;
column-rule: revert-layer;
column-rule: unset;

Values

The column-rule property is specified as one, two, or three of the values listed below, in any order.

<'column-rule-width'>

Is a <length> or one of the three keywords, thin, medium, or thick. See border-width for details.

<'column-rule-style'>

See border-style for possible values and details.

<'column-rule-color'>

Is a <color> value.

Formal definition

Initial valueas each of the properties of the shorthand:
Applies tomulticol elements
Inheritedno
Computed valueas each of the properties of the shorthand:
Animation typeas each of the properties of the shorthand:

Formal syntax

column-rule = 
<gap-rule-list> |
<auto-gap-rule-list>

<gap-rule-list> =
<gap-rule-or-repeat> [ / <gap-rule-or-repeat> ]*

<auto-gap-rule-list> =
[ [ <gap-rule-or-repeat> ] / ]* <auto-repeat-gap-rule> [ / [ <gap-rule-or-repeat> ] ]*

<gap-rule-or-repeat> =
<gap-rule> |
<repeat-gap-rule>

<auto-repeat-gap-rule> =
repeat( auto , [ <gap-rule> ]# )

<gap-rule> =
<line-width> ||
<line-style> ||
<color>

<repeat-gap-rule> =
repeat( [ <integer [1,∞]> ] , [ <gap-rule> ]# )

<line-width> =
<length [0,∞]> |
thin |
medium |
thick

<line-style> =
none |
hidden |
dotted |
dashed |
solid |
double |
groove |
ridge |
inset |
outset

Examples

Example 1

css
/* Same as "medium dotted currentcolor" */
p.foo {
  column-rule: dotted;
}

/* Same as "medium solid blue" */
p.bar {
  column-rule: solid blue;
}

/* Same as "8px solid currentcolor" */
p.baz {
  column-rule: solid 8px;
}

p.abc {
  column-rule: thick inset blue;
}

Example 2

HTML

html
<p class="content-box">
  This is a bunch of text split into three columns. Take note of how the
  `column-rule` property is used to adjust the style, width, and color of the
  rule that appears between the columns.
</p>

CSS

css
.content-box {
  padding: 0.3em;
  background: #ff7;
  column-count: 3;
  column-rule: inset 2px #33f;
}

Result

Specifications

Specification
CSS Multi-column Layout Module Level 1
# column-rule

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
column-rule

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
Requires a vendor prefix or different name for use.
Has more compatibility info.

See also