Bootstrap 4 - How remove or edit opacity in modal.backdrop

Question

I am working with angular and want to create a modal. However I am having a lot of problems removing or editing modal-backdrop as it never takes my values in css.

It is possible to remove through data-backdrop = false, I know, but I intend to close the modal when I click outside of this, it gives not use the data-backdrop.

Can someone experienced help me? I've been at this for days and so far still nothing.

I leave my code and stackblitz to test. Thanks !

Code

Stackblitz

HTML

<div class="container">
  <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#myModal">
    Open modal
  </button>
  <div class="modal fade" id="myModal">
    <div class="modal-dialog modal-xl">
      <div class="modal-content">
        <div class="modal-header">
          <h4 class="modal-title">Modal Heading</h4>
          <button type="button" class="close" data-dismiss="modal">&times;</button>
        </div>
        <div class="modal-body">
          Modal body..
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        </div>
      </div>
    </div>
  </div>
</div>

Answer 1

An alternative answer without using !important (should be avoided when possible)

::ng-deep .modal-backdrop.show {
  background: transparent;
}

Answer 2

As shown in this stackblitz https://stackblitz.com/edit/angular-1dh6k3

you can add

.fade.show {
  background: red; // example
  opacity: 1; // example
}

and you are able to edit the modal backdrop

Answer 3

You can try this:

.modal-backdrop {
  opacity: 0 !important;
}