<!-- Button trigger modal-->
<button class="btn btn-primary" type="button" data-toggle="modal" data-target="#exampleModal">Launch demo modal</button>
<!-- Modal-->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal Title</h5><button class="close" type="button" data-dismiss="modal" aria-label="Close"><span class="font-weight-light" aria-hidden="true">&times;</span></button>
      </div>
      <div class="modal-body">
        <p>Woohoo, you're reading this text in a modal!</p>
      </div>
      <div class="modal-footer"><button class="btn btn-secondary btn-sm" type="button" data-dismiss="modal">Close</button><button class="btn btn-primary btn-sm" type="button">Save changes</button></div>
    </div>
  </div>
</div>