grid-column-gap

The grid-column-gap CSS property specifies the gutter between grid columns.

/* <length> values */
grid-column-gap: 20px;
grid-column-gap: 1em;
grid-column-gap: 3vmin;
grid-column-gap: 0.5cm;
/* <percentage> value */
grid-column-gap: 10%;
/* Global values */
grid-column-gap: inherit;
grid-column-gap: initial;
grid-column-gap: unset;

The effect is as though the affected grid lines acquired width: the grid track between two grid lines is the space between the gutters that represent them. For the purpose of track sizing, each gutter is essentially treated as an extra track of the specified length. Negative values are invalid.

Initial value	`0`
Applies to	grid containers
Inherited	no
Percentages	yes, as the dimension of the element
Media	visual
Computed value	the percentage as specified or the absolute length
Animation type	a length
Canonical order	the unique non-ambiguous order defined by the formal grammar

Syntax

Values

<length-percentage>: Is the width of the gutter separating the grid columns. <percentage> values are relative to the dimension of the element.

Formal syntax

<length-percentage>where 
<length-percentage> = <length> | <percentage>

Example

HTML Content

<div id="grid">
  <div></div>
  <div></div>
  <div></div>
</div>

CSS Content

#grid {
  display: grid;
  height: 100px;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 100px;
  grid-column-gap: 20px;
}
#grid > div {
  background-color: lime;
}

Specifications

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

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Edge	Opera	Safari
Basic support	57.0^[1]	52.0 (52.0)^[2]	No support^[3]	No support^[3]	44^[1]	No support^[5]

Feature	Android Webview	Chrome for Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	57.0^[1]	57.0^[1]	52.0 (52.0)^[2]	No support^[3]	44	No support

[1] Implemented behind the experimental Web Platform features flag in chrome://flags since Chrome 29.0.

[2] Implemented behind the preference layout.css.grid.enabled since Gecko 40.0 (Firefox 40.0 / Thunderbird 40.0 / SeaMonkey 2.37), defaulting to false. Since Gecko 52.0 (Firefox 52.0 / Thunderbird 52.0 / SeaMonkey 2.49) it is enabled by default.

[3] Internet Explorer implements an older version of the specification, which didn't define this property.

[4] Implemented behind the Enable experimental Web Platform features flag in chrome://flags since Opera 28.0.

[5] Experimental implementation available in Safari Technological Preview.