<!DOCTYPE html>
<html>
<head>
<title>Introduction to CSS</title>
<style>
body {
background-color: #f0f8ff;
font-family: Arial, sans-serif;
}
h1 {
color: #2c3e50;
text-align: center;
}
p {
font-size: 18px;
color: #34495e;
padding: 20px;
}
</style>
</head>
<body>
<h1>Welcome to CSS</h1>
<p>CSS lets you style your web pages beautifully. This page uses simple CSS to change the background color, text color, and alignment.</p>
</body>
</html>