view/adminhtml/layout/fbeadmin_setup_index.xml (14 lines of code) (raw):
<?xml version="1.0"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<head>
<title>
Facebook Business Extension
</title>
<css src="Facebook_BusinessExtension::css/fbe.css" />
</head>
<body>
<referenceContainer name="content">
<block class="Facebook\BusinessExtension\Block\Adminhtml\Setup" template="Facebook_BusinessExtension::setup.phtml"/>
</referenceContainer>
</body>
</page>