Edit in JSFiddle

<html>
    <head><title>Details element in html5</title></head>
    <body>
        <details>
            <summary>Movies</summary>
            <details>
                <summary>Hollywood</summary>
                <p>300</p>
                <p>Goal</p>
                <p>Lord of Rings</p>
            </details>
            <details>
                <summary>pollywood</summary>
                <p>3 Idiots</p>
                <p>Agneepath</p>
                <p>Special 26</p>
            </details>
        </details>
    </body>