body{font-family:sans-serif;margin:0;padding:0}header{background:#333;color:#fff;padding:1rem}header h1{margin:0;font-size:1.5rem}nav{margin-top:.5rem}nav a{color:#fff;text-decoration:none;margin-right:1rem}nav a:hover{text-decoration:underline}main{padding:1rem}section{margin-bottom:2rem}h2{border-bottom:2px solid #333;padding-bottom:.5rem}footer{background:#eee;padding:1rem;text-align:center;font-size:.8rem}