How do I fix this overflow problem without setting any height? : <p>I have been working on this interface for few days using bootstrap4 and I cant get this one div to get a scrollbar without setting height in px's. Also a guide toward managing one page design?
Following is the link to the HTML code.</p>

<p><a href="https://www.codeply.com/p/xm4bUOWFVh" rel="nofollow noreferrer">https://www.codeply.com/p/xm4bUOWFVh</a></p>
