Bootstrap Form Issue

Example of Bootstrap form issue where resizing not working properly

HTML

<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<div class="container fullscreen">
    <div class="row">
        <div class="col-md-6">
			<fieldset>
				<legend>Summary</legend>
				<div class="row">
					<div class="col-md-6">
						<form class="form-horizontal">
							<div class="form-group row">
								<label class="control-label col-xs-4">Order #:</label>
								<div class="col-xs-8">
									<p class="form-control-static">test</p>
								</div>
							</div>

							<div class="form-group">
								<label class="control-label col-xs-4">Status:</label>
								<div class="col-xs-8">
									<p class="form-control-static">test33</p>
								</div>
							</div>

							<div class="form-group">
								<label class="control-label col-xs-4">Business:</label>
								<div class="col-xs-8">
									<p class="form-control-static">test</p>
								</div>
							</div>

							<div class="form-group">
								<label class="control-label col-xs-4">Division:</label>
								<div class="col-xs-8">
									<p class="form-control-static">test</p>
								</div>
							</div>
						</form>
					</div>
					
					<div class="col-md-6">
						<form class="form-horizontal">
							<div class="form-group">
								<label class="control-label col-xs-4">Entered:</label>
								<div class="col-xs-8">
									<p class="form-control-static">test</p>
								</div>
							</div>

							<div class="form-group">
								<label class="control-label col-xs-4">Salesperson:</label>
								<div class="col-xs-8">
									<p class="form-control-static">teasdf</p>
								</div>
							</div>

							<div class="form-group">
								<label class="control-label col-xs-4">Coordinator:</label>
								<div class="col-xs-8">
									<p class="form-control-static">tes</p>
								</div>
							</div>

							<div class="form-group">
								<label...

CSS

/* Latest compiled and minified CSS included as External Resource*/


/* Optional theme */

@import url('//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap-theme.min.css');
body {
  margin: 10px;
}