Preview:
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container{
            border: 2px solid red;
            display: grid;
            grid-template-columns:100px 120px 100px;
            grid-template-rows: 100px 100px 100px;
            background-color: rgb(166, 120, 209);
                     
            
        }
        .item{
            height: 45px;
            width: 45px;
            border: 5px solid black;
            margin: 5px;

        }
    </style>
</head>
<body>
    <div class="container">
        <div class="item">1</div>
        <div class="item">2</div>
        <div class="item">3</div>
        <div class="item">4</div>
        <div class="item">5</div>
        <div class="item">6</div>
        <div class="item">7</div>
        <div class="item">8</div>

    </div>
</body>
</html>
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