Bootstrap Modal sitting behind backdrop

In my case, I could fix it by adding css for the .modal-backdrop

.modal-backdrop {
  z-index: -1;
}

Although this works, form controls still seem to appear above the backdrop, clicking anywhere dismisses the modal, but it doesn't look great.

A better workaround for me is to bind to the shown event (once the page is loaded) and to correct the z-index property.

$('.modal').on('shown.bs.modal', function() {
  $(this).css("z-index", parseInt($('.modal-backdrop').css('z-index')) + 1);
});

In this case, if you are OK with changing the DOM on modal shown:

$('.modal').on('shown.bs.modal', function() {
  //Make sure the modal and backdrop are siblings (changes the DOM)
  $(this).before($('.modal-backdrop'));
  //Make sure the z-index is higher than the backdrop
  $(this).css("z-index", parseInt($('.modal-backdrop').css('z-index')) + 1);
});

Although the z-index of the .modal is higher than that of the .modal-backdrop, that .modal is in a parent div #content-wrap which has a lower z-index than .modal-backdrop (z-index: 1002 vs z-index: 1030).

Because the parent has lower z-index than the .modal-backdrop everything in it will be behind the modal, irrespective of any z-index given to the children.

If you remove the z-index you have set on both the body div#fullContainer #content-wrap and also on the #ctrlNavPanel, everything seems to work ok.

body div#fullContainer #content-wrap {
  background: #ffffff;
  bottom: 0;
  box-shadow: -5px 0px 8px #000000;
  position: absolute;
  top: 0;
  width: 100%;
}

#ctrlNavPanel {
  background: #333333;
  bottom: 0;
  box-sizing: content-box;
  height: 100%;
  overflow-y: auto;
  position: absolute;
  top: 0;
  width: 250px;
}

NOTE: I think that you may have initially used z-indexes on the #content-wrap and #ctrlNavPanel to ensure the nav sits behind, but that's not necessary because the nav element comes before the content-wrap in the HTML, so you only need to position them, not explicitly set a stacking order.

EDIT As Schmalzy picked up on, the links are no longer clickable. This is because the full-container is 100% wide and so covers the navigation. The quickest way to fix this is to place the navigation inside that div:

<div id="fullContainer">
  <aside id="ctrlNavPanel">
    <ul class="nav-link-list">
      <li><label>Menu</label></li>
      <li><a href="/"><span class="fa fa-lg fa-home"></span> Home</a></li>
      <li><a><span class="fa fa-lg fa-group"></span>About Us</a></li>
      <li><a><span class="fa fa-lg fa-book"></span> Contacts</a></li>
    </ul>
  </aside>
  <div id="content-wrap">
    ...
  </div>
</div>

DEMO HERE


Just move the entire modal outside of the rest of your code, to the very bottom. It doesn't need to be nested in any other element, other than the body.

<body>
    <!-- All other HTML -->
    <div>
        ...
    </div>

    <!-- Modal -->
    <div class="modal fade" id="myModal">
        ...
    </div>
</body>

Demo

They hint at this solution in the documentation.

Modal Markup Placement
Always try to place a modal's HTML code in a top-level position in your document to avoid other components affecting the modal's appearance and/or functionality.

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