body {
font-family: Arial, sans-serif;
margin: 0;
line-height: 1.6;
}

header {
background: #222;
color: #fff;
padding: 2rem;
text-align: center;
}

nav a {
color: #fff;
margin: 0 1rem;
text-decoration: none;
font-weight: bold;
}

main {
padding: 2rem;
}

section {
margin-bottom: 2rem;
}

footer {
background: #f4f4f4;
text-align: center;
padding: 1rem;
}