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        body {
            display: flex;
            justify-content: center;
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            height: 100vh;
            font-family: Roboto, sans-serif;
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            padding: 0;
            box-sizing: border-box;
            text-align: center;
            line-height: 1.6;
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        .content {
            max-width: 210mm;
            padding: 20mm;
            border: 1px solid #000;
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            font-size: 1.2rem;
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        h1 {
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    <div class="content">
        <h1>Additional articles</h1>
        <p>List of extra topics that assume you've covered the first two parts of tutorial. There is no clear hierarchy here, you can read articles in the order you want.</p>
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