column-gap

The column-gap CSS property sets the size of the gap between columns for elements which are specified to be displayed as multi-column elements.

Initial value	normal
Applies to	multicol elements
Inherited	no
Media	visual
Computed value	the absolute length or the keyword normal
Animation type	a length
Canonical order	the unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword value */
column-gap: normal; 

/* <length> values */
column-gap: 3px;
column-gap: 2.5em;

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

Values

normal

Is a keyword indicating to use the browser-defined default spacing between columns. The specification, which most modern browsers follow, recommends that this be equal to a length of 1em.

<length>

Is a <length> value defining the size of the gap between columns. It must not be negative, but may be equal to 0.

Formal syntax

<length> | normal

Examples

.content-box {
  border: 10px solid #000000;
  column-count: 3;
  column-gap: 20px;
}

Specifications

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

Browser compatibility

[1] Before Firefox 3 (Gecko 1.9), the default value associated to the normal keyword was 0 and not 1em.

See also

• CSS Reference