body { font-family: Arial, sans-serif; margin: 0; padding: 0; }
nav { background: #333; padding: 1em; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; }
nav ul li { margin-right: 15px; }
nav ul li a { color: white; text-decoration: none; }
footer { text-align: center; padding: 1em; background: #f0f0f0; position: fixed; bottom: 0; width: 100%; }
h1, h2, p, ul { margin: 1em; }