Contents of twitter bootstrap tab are mixing - css

Question

I'm still new in creating websites using twitter bootstrap. I was planning to have a tab that contains the assessment of a student but the contents of my tabs are mixing even though the id's are correct. For example, the contents of the payment history are seen in the other tabs although I am not missing any opening and closing tags. The values there are still dummy data. Here is the code:
<section id="main-content" " ng-controller="studCtrl">
<section class="wrapper">
<div class="content-panel">
<div class="row mt">
<div class="col-lg-12">
<h2>Student's Assessment</h2>
<ul class="nav nav-pills">
<li class="active">Distribution</li>
<li class="">Miscellaneous Fees</li>
<li class="">Other Fees</li>
<!--<li class="">Installment Fees</li-->
<li class="">Payment History</li>
</ul>
<div class="tab-content">
<div class="tab-pane fade in active" id="distribution">
<div class="table-responsive">
<table class="table table-striped table-bordered table-hover">
<thead>
...
</thead>
<tbody>
...
</tbody>
</table>
</div><!--table-responsive-->
</div>
<div class="tab-pane fade" id="misc-fees">
<div class="table-responsive">
<table class="table table-striped table-bordered table-hover">
<thead>
...
</thead>
<tbody>
...
</tbody>
</table>
</div><!--table-responsive-->
</div>
<div class="tab-pane fade" id="other-fees">
<div class="table-responsive">
<table class="table table-striped table-bordered table-hover">
<thead>
...
</thead>
<tbody>
...
</tbody>
</table>
</div>
</div>
<div class="tab-pane fade" id="payment-hist">
payment history
</div><!--payment history-->
</div><!-- end of tab content-->
</div><!--col-lg-12-->
</div> <!--row mt-->
</div><!--content-panel-->
</section><!--/wrapper -->
</section> <!--main-content-->

Answer 1

<section id="main-content" " ng-controller="studCtrl">
The code here has one more double quote sign. At first, you should remove the sign.
But in case still not works properly after removing the sign, than I suggest you may check DOM structure using dev tools in browser(chrome/firefox/...).