JSFiddle - React, Tailwind, and code Playground
HTML
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/css/bootstrap-combined.min.css">
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/js/bootstrap.min.js"></script>
<a href="#modal-test" data-toggle="modal">Trigger Modal</a>
<!-- Hidden modal -->
<div id="modal-test" class="modal hide fade">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3>Test Modal</h3>
</div>
<div class="modal-body">
<p>Test modal content</p>
<input type="text" class="span7" placeholder="colors of the rainbow" data-provide="typeahead" data-items="4" data-source="["red","orange","yellow","green","blue","violet"]">
</div>
<div class="modal-footer">
xxxxx
</div>
</div>
CSS
.typeahead {
position:relative !important;
z-index:10000 !important;
}