How to align bootstrap div horizontally on the page?

Question

Hi Please look at the code:-

<form runat="server">

<div class="container">

<div class="row">

<div class="col-md-6">

<div class="panel panel-primary">

<div class="panel-heading text-center">

<h3 class="panel-title">

<span class="glyphicon glyphicon-bookmark"></span> Quick Shortcuts</h3>

</div>

<div class="panel-body">

<div class="row">

<div class="text-center">

<a href="#" class="btn btn-danger btn-block" role="button"><span class="glyphicon glyphicon-list-alt"></span> <br/>Apps</a>

<a href="#" class="btn btn-warning btn-block" role="button"><span class="glyphicon glyphicon-bookmark"></span> <br/>Bookmarks</a>

<a href="#" class="btn btn-primary btn-block" role="button"><span class="glyphicon glyphicon-signal"></span> <br/>Reports</a>

<a href="#" class="btn btn-primary btn-block" role="button"><span class="glyphicon glyphicon-comment"></span> <br/>Comments</a>

<a href="#" class="btn btn-success btn-block" role="button"><span class="glyphicon glyphicon-user"></span> <br/>Users</a>

<a href="#" class="btn btn-info btn-block" role="button"><span class="glyphicon glyphicon-file"></span> <br/>Notes</a>

<a href="#" class="btn btn-primary btn-block" role="button"><span class="glyphicon glyphicon-picture"></span> <br/>Photos</a>

<a href="#" class="btn btn-primary btn-block" role="button"><span class="glyphicon glyphicon-tag"></span> <br/>Tags</a>

</div>

</div>

</div>

</div>

</div>

</div>

</form>

The output i am getting is like this:-https://i.stack.imgur.com/A3C0B.png

It is on the right side of the page. I want it to be on horizontally centered and responsive too.

Please help..