What's wrong with my code below? Block c is not aligned with block a and b
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css">
<script src="https://code.jquery.com/jquery-1.11.3.min.js"></script><scriptsrc="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>
<body>
<div data-role="page" id="pageone">
<div data-role="panel" id="myPanel">
<div class="ui-grid-b">
<div class="ui-block-a"><div class="ui-bar ui-bar-a" style="height:60px">Block A</div></div>
<div class="ui-block-b"><div class="ui-bar ui-bar-a" style="height:60px">Block B</div></div>
<div class="ui-block-c"><div class="ui-bar ui-bar-a" style="height:60px">Block C</div></div>
</div><!-- /grid-b -->
</div>
<div data-role="header">
<h1>Page Header</h1>
</div>
<div data-role="main" class="ui-content">
<p>Click on the button below to open the Panel.</p>
<a href="#myPanel" class="ui-btn ui-btn-inline ui-corner-all ui-shadow">Open Panel</a>
</div>
<div data-role="footer">
<h1>Page Footer</h1>
</div>
</div>
</body>
</html>