Extendig the hight of two elements from an accordion?

Extendig the hight of two elements from an accordion?

I´ve got a dropdown function for a list of customers, on click on a logo, the hidden content slides down to show additional content.

Now I have an accordeon in my hidden content and when I open the accordeon, the content below scrolls out of the div and you cant read it.

Is it possible, to change the height or maybe padding-bottom of the active / shown divs "group" and "wrapper_hidden_content" on click of a accordeon element?

JSfiddle

http://jsfiddle.net/v5m4wyoo/5/