Within KnowledgeBase article you may want to create content that are hidden by default but only revealed if user click on it. see example below
Go to the Source and paste the following script
<a class="btn btn-default" href="#tnc" data-toggle="collapse">Click here for T&C</a> <div class="collapse" id="tnc">This text will be hidden by default</div>
- When toggling between Source and Preview Mode this editor will strip out data-toggle="collapse", as it is designed to strip out non standard HTML code, the workaround is to save your article in Source mode
- If you don't want button styling the following text can be removed class="btn btn-default"