body{font-family:Helvetica Neue,Arial,sans-serif;line-height:1.6;margin:0;padding:0}.container{margin:0 auto;max-width:1200px;padding:0 20px}header{background-color:#f8f9fa;border-bottom:1px solid #e9ecef;padding:1rem 0}nav a{color:#007bff;margin-right:1rem;text-decoration:none}nav a:hover{text-decoration:underline}main{padding:2rem 0}footer{background-color:#f8f9fa;border-top:1px solid #e9ecef;margin-top:2rem;padding:1rem 0;text-align:center}