body{font-family:Arial,sans-serif;background-color:#ecf0f1}.container{max-width:1200px;margin:0 auto;padding:20px}header{background-color:#3498db;color:#fff;padding:10px 0;text-align:center}nav ul{list-style:none;padding:0}nav ul li{display:inline;margin-right:20px}nav ul li a{color:#fff;text-decoration:none}nav ul li a:hover{text-decoration:underline}main{padding:20px 0}main section{margin-bottom:40px}main section h1{color:#3498db}main section p{line-height:1.6}footer{background-color:#333;color:#fff;text-align:center;padding:10px 0;position:absolute;bottom:0;width:100%}