Bootstrap accordion : make your full fill all the space of the panel-heading December 28, 2017 https://stackoverflow.com/questions/19236717/how-to-make-a-bootstrap-accordion-collapse-when-clicking-the-header-div http://jsfiddle.net/KbQyx/ .panel-title a { display: block; padding: 10px 15px; margin: -10px -15px; }