title: Make div stick at the bottom even if scroll it
body: <p>I am implementing a footer which should stick at the bottom of the window even if I scroll. And the scroll bar for the content above footer should be within content itself (not extending to footer). </p>
  
  <p>Is there a way of doing this? Thanks.</p>
  
  <p><a href="https://i.stack.imgur.com/7fOcS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7fOcS.png" alt="enter image description here"></a></p>