<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
body {
background-color: #e6ebef;
}
h2 {
background-color: #8ebf42;
}
p {
background-color: #1c87c9;
}
</style>
</head>
<body>
<h2>Some heading with green background.</h2>
<p>Some paragraph with blue background.</p>
</body>
</html>