<!DOCTYPE html>
<html>
<head>
<style>
#flex-container {
border: 1px solid black;
background-color: rgb(255, 230, 251);
display: grid;
grid-template-columns: repeat(3,1fr);
column-gap: 30px;
}
#flex-container > div {
border: 1px solid black;
padding: 10px;
background-color: lightgreen;
}
</style>
</head>
<body>
<h1>The column-gap Property with grid</h1>
<p>Use the column-gap property to specify the size of the gap between the columns in a grid layout.</p>
<p>This grid layout has a 30px gap between the columns:</p>
<div id="flex-container">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>
<div>8</div>
<div>9</div>
<div>10</div>
<div>11</div>
<div>12</div>
<div>13</div>
</div>