Collapse

The accordion uses collapse internally to make it collapsible. To render an accordion that’s expanded, add the .open class on the .accordion Read bootstrap documentaion for more details.

For accordion shadow add class .accordion-shadow to <div id="accordion2" class="accordion">

For accordion shadow add class .accordion-bordered to <div id="accordion3" class="accordion">

For accordion shadow add class .accordion-header-border-bottom to <div id="accordion4" class="accordion">