<!DOCTYPE html> <!-- Any copyright is dedicated to the Public Domain. - http://creativecommons.org/publicdomain/zero/1.0/ --> <html> <body> <ol> <li>First item <div> <summary>Summary <ul> <li>First unordered item in summary</li> <li>Second unordered item in summary</li> </ul> <div> <ol> <li>First item in summary</li> <li>Second item in summary</li> </ol> </div> <svg> <foreignObject width="300" height="300"> <ol> <li>First item in foreignObject</li> <li>Second item in foreignObject</li> </ol> </foreignObject> </svg> </summary> <p>This is the details.</p> <li>First item in details</li> <li>Second item in details</li> </div> </li> <li>Second item</li> </ol> </body> </html>