Fieldset component from PrimeFaces is also now available for PrimeUI. This widget can take an ordinary fieldset element and provide a content toggle feature along with regular css renovation for a better look.
$('#default').puifieldset();
<fieldset id="default">
<legend>Title</legend>
Content
</fieldset>
Demo is available at PrimeUI homepage, the widget will be available in next week’s 0.3 release along with Panel widget.

Nice.
May be a slight styling issue on Chrome. Dash and text in the demo app is wrapped at certain zoom levels. Look fine in Firefox.
Thanks for the heads up, should be fixed now.
No problem, each one of these is like an early Christmas present.