title: Stacked/nested/multiple modals in ng2-bootstrap
body: <p>I have a modal within a modal, and it mostly works, except for one thing. The backdrop hangs behind the modal that is already open. I checked the documentation, and I'm not sure how to specify exactly where the backdrop should go. The API shows <code>ModalBackdropComponent</code>, with a selector of <code>bs-modal-backdrop</code>, but I'm not sure if there is something I can do with this to solve my issue. I'm not sure if this is a z-index issue, or if the backdrop needs to be placed somewhere specific.</p>