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

BCD tables only load in the browser

See also