column-rule-width

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-width CSS property sets the width of the line drawn between columns in a multi-column layout.

Try it

Syntax

css
/* Keyword values */
column-rule-width: thin;
column-rule-width: medium;
column-rule-width: thick;

/* <length> values */
column-rule-width: 1px;
column-rule-width: 2.5em;

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

The column-rule-width property is specified as a single <'border-width'> value.

Values

<'border-width'>

Is a keyword defined by border-width describing the width of the rule. It may be either a <length> or one of the thin, medium, or thick keywords.

Formal definition

Initial valuemedium
Applies tomulticol elements
Inheritedno
Computed valuethe absolute length; 0 if the column-rule-style is none or hidden
Animation typea length

Formal syntax

column-rule-width = 
<line-width-list> |
<auto-line-width-list>

<line-width-list> =
[ <line-width-or-repeat> ]+

<auto-line-width-list> =
[ <line-width-or-repeat> ]* <auto-repeat-line-width> [ <line-width-or-repeat> ]*

<line-width-or-repeat> =
<line-width> |
<repeat-line-width>

<auto-repeat-line-width> =
repeat( auto , [ <line-width> ]+ )

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

<repeat-line-width> =
repeat( [ <integer [1,∞]> ] , [ <line-width> ]+ )

Examples

Setting a thick column rule

HTML

html
<p>
  This is a bunch of text split into three columns. The `column-rule-width`
  property is used to change the width of the line that is drawn between
  columns. Don't you think that's wonderful?
</p>

CSS

css
p {
  column-count: 3;
  column-rule-style: solid;
  column-rule-width: thick;
}

Result

Specifications

Specification
CSS Multi-column Layout Module Level 1
# crw

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-width

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