<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.tab.Panel', {
requires: ['Ext.layout.container.Card'],
xtype: 'layout-cardtabs',
html: 'This is first tab.'
html: 'This is second tab.'
html: 'This is third tab.'