<link href="//cdn.bootcss.com/extjs/6.2.0/classic/theme-classic/resources/theme-classic-all.css" rel="stylesheet" />
<script type="text/javascript" src="//cdn.bootcss.com/extjs/6.2.0/ext-all.js"></script>
<script type="text/javascript">
Ext.create('Ext.container.Container', {
renderTo : Ext.getBody(),
html : 'This panel has colspan = 2',
html : 'This panel has rowspan = 2',