No matter what CSS or pure HTML modal I put onto my website it keeps getting completely grayed out when you click to open it . I first tried it in my nav bar and assumed maybe it has something to do with the z-index but literally wherever I put it it keeps getting grayed out when you click it. I'm Obviously not going to show the whole source code because it's too much but I just want to know what to look for.
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLong">
      Launch demo modal
    </button>
    <!-- Modal -->
    <div class="modal fade" id="exampleModalLong" tabindex="1" role="dialog" aria-labelledby="exampleModalLongTitle" aria-hidden="true">
      <div class="modal-dialog" role="document">
        <div class="modal-content">
          <div class="modal-header">
            <h5 class="modal-title" id="exampleModalLongTitle">Modal title</h5>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">×</span>
            </button>
          </div>
          <div class="modal-body">
            ...
          </div>
          <div class="modal-footer">
            <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
            <button type="button" class="btn btn-primary">Save changes</button>
          </div>
        </div>
      </div>
    </div>