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

header{
    background: #222;
    padding: 20px;
    text-align: center;
}
header nav a {
    color:#76FF03;
    margin:0 10px;
    text-decoration: none;
}