<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
.contents {
display: contents;
border: 1px solid #666;
background-color: #eee;
padding: 10px;
width: 200px;
}
.hello {
border: 1px solid #1c87c9;
background-color: #ccc;
padding: 10px;
text-align: center;
}
</style>
</head>
<body>
<h2>Display property example</h2>
<div class="contents">
Lorem Ipsum is dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
<div class="hello">HELLO!</div>
It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.
</div>
</body>
</html>