ecial way when they are defined outside their usual containers like <code>&lt;svg&gt;</code> and <code>&lt;math&gt;</code>.</p>
<ul>
<li><code>html</code> - All root nodes in the template are HTML. Root nodes may also be
top-level elements such as <code>&lt;svg&gt;</code> or <code>&lt;math&gt;</code>.</li>
<li><code>svg</code> - The root nodes in the template are SVG elements (excluding <code>&lt;math&gt;</code>).</li>
<li><code>math</code> - The root nodes in the template are MathML elements (excluding <co