render the table on modal in twitter bootstrap - twitter-bootstrap-3

Question

I am facing issue of table not being rendered on twitter bootstrap modal. I am doing similar to mentioned in the jsfiddle (http://jsfiddle.net/iamakshay04/sh26m80o/2/) . So to test it, I tried exactly same mentioned and found that data(table) is rendered on the page instead of the modal.
<div id="classModal" class="modal fade bs-example-modal-lg"
tabindex="-1" role="dialog" aria-labelledby="classInfo" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">
×
</button>
<h4 class="modal-title" id="classModalLabel">
Class Info
</h4>
</div>
<div class="modal-body">
<table id="classTable" class="table table-bordered">
<thead>
</thead>
<tbody>
<tr>
<td>CLN</td>
<td>Last Updated Date</td>
<td>Class Name</td>
<td># Tests</td>
<td>Test Coverage (Instruction)</td>
<td>Test Coverage (Complexity)</td>
<td>Complex Covered</td>
<td>Complex Total</td>
<td>Category</td>
</tr>
</tbody>
</table>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-primary" data-dismiss="modal">
Close
</button>
</div>
</div>
</div>
</div>
jQuery:
$('#classModal').modal('show')
CSS:
#classModal {}
.modal-body {
overflow-x: auto;
}