column-rule

In multi-column layouts, the column-rule CSS property specifies a straight line, or "rule", to be drawn between each column. It is a convenient shorthand to avoid setting each of the individual column-rule-* properties separately: column-rule-width, column-rule-style and column-rule-color.

Initial value	as each of the properties of the shorthand: column-rule-width: medium column-rule-style: none column-rule-color: currentcolor
Applies to	multicol elements
Inherited	no
Media	visual
Computed value	as each of the properties of the shorthand: column-rule-color: If the value is translucent, the computed value will be the rgba() corresponding one. If it isn't, it will be the rgb() corresponding one. The transparent keyword maps to rgba(0,0,0,0). column-rule-style: as specified column-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 color column-rule-style: discrete column-rule-width: a length
Canonical order	order of appearance in the formal grammar of the values

Syntax

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

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

Values

Accepts one, two or three values 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 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 content

<div id="col_rul"> 
  <p> column one </p>
  <p> column two </p>
  <p> column three </p>
</div>

CSS content

#col_rul { 
  padding: 0.3em;
  background: gold; 
  border: groove 2px gold;
  column-rule: inset 2px gold;
  column-count: 3;
}

Result

Specifications

Specification	Status	Comment
CSS Multi-column Layout Module The definition of 'column-rule' in that specification.	Candidate Recommendation	Initial definition

Browser compatibility