CSS grid-column-gap Property

The grid-column-gap property defines the size of the gap between the columns in a grid layout.

CSS Syntax

grid-column-gap: length;

Property Values:

none: It is used to set grid-column-gap property to its default value. The default value of grid-column-gap is 0.
length: The size of the gap between columns is given in terms of length. The value of length can be in form pf px, em etc. The value must be non-negative.
initial: It is used to set grid-column-gap property to its default value.
inherit: This property is inherited from its parent.

Supported Browsers:

Firefox: 52.0, 2.0 -moz-
Google Chrome: 50.0, 4.0 -webkit-
Internet Explorer: 10.0
Safari: 9.0, 3.1 -webkit-
Opera: 37.0, 15.0 -webkit-, 11.1

Example -

<!DOCTYPE html>
<html>
<head>
<style>
.grid-container {
  display: grid;
  grid-template-columns: auto auto auto auto;
  grid-column-gap: 50px;
  grid-row-gap: 10px;
  background-color: #2196F3;
  padding: 10px;
}

.grid-container > div {
  background-color: rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 20px 0;
  font-size: 30px;
}
</style>
</head>
<body>

<h1>The grid-column-gap Property</h1>

<p>Use the <em>grid-column-gap</em> property to specify the size of the gap between the columns.</p>
<p>This grid has a 50px gap between columns (and a 10px gap between rows):</p>

</body>
</html>