UTF-8.
                </dd>
                <dt><code>&lt;head&gt;&lt;meta name="viewport"&gt;</code></dt>
                <dd>The viewport meta is necessary to have mobile-friendly layout.</dd>
                <dt><code>&lt;head&gt;&lt;link rel="stylesheet" href="index.css"&gt;</code></dt>
                <dd>By convention the stylesheet is loaded from <code>&lt;head&gt;</code> in a blocking way to ensure the page's markup does not have a flash of unstyled content.</dd>
                <dt><code>&lt;head&