jquery - Bootstrap: sticky footer or affix? -

I tried to add an element to my page, on which I scroll down to the bottom of the page.

I am using CSS Bootstrap as JS framework, so I tried to do it with an Exx class. But the element always remains in its position and when I scroll it up, then no function shows up.

What do I want to do here:

Even my code is here:

  & lt; Div class = "affix" data-detective = "affix-bottom" data-offset-top = "200" data-offset-fry = "0" & ​​gt;    
 
 
 Whether the element was inspected, and this is the CSS on the stick container ...  
  .sticky-wrapper.stuck {status: fixed; Bottom: 0; }   
 very straight forward!