<!DOCTYPE html>
<html>
<head>
<style>
.class_example {
background-color:black;
color:green;
padding:10px
}
</style>
</head>
<body>
<div class="class_example">
<h1>HTML</h1>
<p>Hypertext Markup Language (HTML) is the standard markup language
for creating web pages and web applications.</p>
</div>
</body>
</html>