Hi All,  I'd like to add a class to accordion-group so I can make the height to 100%. Currently I have 4 accordion groups that have a height: calc( 100% / 4), like this they get the height of the page. Unfortunately I can get the click even to add the extended class.  className: '+=expanded'  Not entirely sure is the best approach. Would be lovely do get some directions.   See the Pen rEojde by davide77 (@davide77) on CodePen