<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>Grid 1</title>
    <style>
        *{
            box-sizing: border-box;
        }
        
        .container{
            display: grid;
            grid-template-columns: repeat(6,1fr);
            grid-gap: 10px;
            height: 100%;
        }

        .nested{
            display: grid;