<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseOne"><span class="glyphicon glyphicon-file">
</span>POST NEW ARTICLE</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse in">
<div class="panel-body">
<div class="row">
<div class="col-md-12">
<div class="form-group">
<input type="text" class="form-control" placeholder="Title" required />
</div>
<div class="form-group">
<textarea class="form-control" placeholder="Content" rows="5" required></textarea>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label for="category">
Category</label>
<select class="form-control" id="category">
<option>Articles</option>
<option>Tutorials</option>
<option>Freebies</option>