course_freecodecamp/grid10.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .item1{background:LightSkyBlue;}
        .item2{background:LightSalmon;}
        .item3{background:PaleTurquoise;}
        .item4{background:LightPink;}
        .item5{background:PaleGreen;}
      
        .container {
          font-size: 40px;
          min-height: 300px;
          width: 100%;
          background: LightGray;
          display: grid;      
          grid-template-columns: repeat(3, 1fr);
          grid-template-rows: 1fr 1fr 1fr;
          grid-gap: 10px;
        }
      </style>
</head>
<body>
    <div class="container">
        <div class="item1">1</div>
        <div class="item2">2</div>
        <div class="item3">3</div>
        <div class="item4">4</div>
        <div class="item5">5</div>
    </div>
</body>
</html>