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

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: unset; 

column-rule

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

It is a shorthand property that sets the individual column-rule-* properties in a single, convenient declaration: column-rule-width, column-rule-style, and column-rule-color.

Note: As with all shorthand properties, any individual value that is not specified is set to its corresponding initial value (possibly overriding values previously set using non-shorthand properties).

Syntax

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: unset; 

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

Values

<'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 value	as each of the properties of the shorthand:column-rule-width: mediumcolumn-rule-style: nonecolumn-rule-color: currentcolor
Applies to	multicol elements
Inherited	no
Computed value	as each of the properties of the shorthand:column-rule-color: computed colorcolumn-rule-style: as specifiedcolumn-rule-width: the absolute length; 0 if the column-rule-style is none or hidden
Animation type	as each of the properties of the shorthand:column-rule-color: a colorcolumn-rule-style: discretecolumn-rule-width: a length

Formal syntax

<'column-rule-width'> || <'column-rule-style'> || <'column-rule-color'>

Examples

Example 1

/* 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

<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

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

Result

Specifications

Specification
CSS Multi-column Layout Module Level 2 # column-rule

See also

Multiple-column Layout column-rule-style column-rule-width column-rule-color

Last modified: Aug 12, 2021, by MDN contributors

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