Is the part under the modal footer still part of the modal or it should by cover by it? If this part should be covered, please send the code snippet in our editor as we are unable to reporduce this error.
Please create a snippet here: https://mdbootstrap.com/snippets/ so we can check what's going on.

Best regards

What I mean? This is a screenshot:

Hello pawled,
If You want to delete margin-bottom in Your modal add mb-0 class like this:

<div class="modal-dialog modal-dialog-scrollable modal-fullscreen-sm-down mb-0">

but I don't know if I udnerstand You correctly so it would be very helpful if You could describe more precise on what you want to achieve.

Best regards

<div class="modal fade" id="boxer2010" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog modal-dialog-scrollable modal-fullscreen-sm-down">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Peugeot Boxer</h5>
        <button
          type="button"
          class="close"
          data-dismiss="modal"
          aria-label="Close"
        ><i class="fas fa-times"></i></button>
      </div>
      <div class="modal-body">
        <h6 style="color: #E88A23;">Transporter</h6>
        <img src="img/angebot/boxer2010.png" class="img-fluid" alt="Bildzoom" />
        <p>
          Das Ladevolumen bis zu 17 m³.
        </p>

      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal" style="background-color: #DB9621;">
          Schließen
        </button>
      </div>
    </div>
  </div>
</div>