body {
background:#111;
color:#eee;
font-family:Arial, sans-serif;
margin:0;
padding:30px;
}

header {
text-align:center;
padding:40px;
}

h1 {
font-size:42px;
}

nav {
text-align:center;
margin:20px;
}

nav a {
color:#fff;
margin:10px;
text-decoration:none;
}

section {
max-width:900px;
margin:30px auto;
padding:25px;
border:1px solid #444;
border-radius:12px;
}

footer {
text-align:center;
margin-top:50px;
}