How to remove clickable link in accordion bootstrap?

Question

css

Hello.
Can you please tell me how to remove the active tab (close it on page load) in Accordion Bootstrap?
I'm spinning, it doesn't work :(
So that all tabs would be closed when the page loads.
Standard code from the bootstrap page:
codepen.io/Freds/pen/oxJPYw
Thanks in advance.

Answer 1

remove the class infrom the first tab
codepen.io/anon/pen/pyqOdo