auto fit and minmax grid in css
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>CSS Grid</title>
<style>
.container{
display: grid;
grid-gap: 1rem;
/* grid-template-columns: 112px 112px 112px; */
/* grid-template-columns: 1fr 1fr 1fr; */
grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
/* justify-content: center; */
}
.box{
border: 2px solid black;
background-color: rgb(245, 187, 101);
padding: 34px;
}
</style>
</head>
<body>
<div class="container">
<div class="box">Item-1</div>
<div class="box">Item-2</div>
<div class="box">Item-3</div>
<div class="box">Item-4</div>
<div class="box">Item-5</div>
<div class="box">Item-6</div>
<div class="box">Item-7</div>
<div class="box">Item-8</div>
<div class="box">Item-9</div>
<div class="box">Item-10</div>
<div class="box">Item-11</div>
<div class="box">Item-12</div>
<div class="box">Item-13</div>
</div>
</body>
</html>