FAQ Accorian (collapse) in CMS page

[Ray UK]

Hi,

How can I make a bootstrap accordian in the CMS page.

I have the code but when I enter it, then editor removes the 'data-target'  'data-toggle' etc. 

The "isClean" function doesnt seem to be the bit that removes this.

 

This code

<button class="btn btn-link" type="button" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne"> Collapsible Group Item #1 </button>

is changed to

<button class="btn btn-link" type="button"> Collapsible Group Item #1 </button>

upon saving.

Any ideas ?

 

Thanka