I didn’t plan to answer my own question but I have the solution.
- Source:
http://trac.webkit.org/timeline?from=2011-04-15T16%3A33%3A41-0700&precision=second - More about the recommendation for the disclosure widget:
http://mail-archive.com/whatwg@lists.whatwg.org/msg26129.html
Code
details summary::-webkit-details-marker {
display:none;
}
Note that the disclosure widget will still be displayed if you don’t provide a summary element, which is allowed by the spec.