header {
background-color: #f0f0f0;
padding: 20px;
text-align: center;
}
header h1 {
margin: 2;
font-size: 10em;
}
header nav ul {
list-style: none;
padding: 0;
margin: 0;
}
header nav li {
display: inline-block;
margin: 0 10px;
}
header nav a {
text-decoration: none;
color: #333;
}