Hi!

For that you need to modify your relationship block so it'll look like that:

  
<!-- 
 ====================================
 
 RELATIONSHIP BLOCK
 
 ====================================
 -->
 <div class="col-12 mt-3" style="border-radius: 3em; background: #111115; font-family: Courier New, monospace; overflow: hidden;">
 <div style="height: 300px; overflow: auto;">

 BLOCK CONTENT

 </div>
 </div>

And then you need to insert everything that was previously in the initial div (it'll be the <p class="text-uppercase mt-4 mt-lg-2 mb-2 pl-2 pl-lg-5 m-3 m-lg-0" style="color: #fff; font-size: 17px;"></p> and <div class="row no-gutters p-2"></div>) instead of the BLOCK CONTENT