<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
.box {
display: inline-flex;
background-color: #8ebf42;
color: white;
padding: 15px;
}
</style>
</head>
<body>
<div class="box">
<h2>Welcome to W3docs!</h2>
</div>
</body>
</html>