9.2 #permalink .expander
The widget itself always contains two areas: The expander_head which defines the clickable area of the component as well as the expander_body which contains the contents. Usually expanders shall visualize their state via a icon inside the clickable area
Example
Markup
<div class="expander" data-widget="Accordion" data-accordion-icon-open="fa fa-plus" data-accordion-icon-close="fa fa-minus" data-accordion-initialstate data-accordion-prefix="expander">
<div class="expander_head" data-accordion-action>
<div class="expander_head_content">
Headcontent goes here
</div>
</div>
<div class="expander_body" data-accordion-effect>
Bodycontent goes here
</div>
</div>
Source:
accordion/css/expander.css, line 1