zeek35.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>Custom Variables</title>

    <style>

        :root {

            --dark-color: rgb(0, 61, 0);

            --middle-color: rgb(60, 136, 207);

            --light-color: rgb(252, 206, 206);

            --maxvw:700px;

        }

        .container {

            background-color:var(--light-color);

            display: flex;

            height: var(--maxvw);

            align-items: center;

            justify-content: center;

        }

        .box {

            height: 150px;

            width: 300px;

            border: var(--middle-color) 2px solid;

            background-color: var(--dark-color);

            color: var(--middle-color);

            padding: 10px;

            margin: 13px 8px;

        }

    </style>

</head>

<body>

    <div class="container">

        <div class="box" id="box-1">BOX 1</div>

        <div class="box" id="box-2">BOX 2</div>

        <div class="box" id="box-3">BOX 3</div>

    </div>

</body>

</html>