Clicking on the backdrop doesn't do anything.
<clr-modal [(clrModalOpen)]="opened" [clrModalClosable]="false">
<h3 class="modal-title">No "x" in the top-right corner</h3>
<div class="modal-body">
<p>Clicking on the backdrop doesn't do anything.</p>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" (click)="opened = false">
I'm the only way to close the modal!
</button>
</div>
</clr-modal>