/* A partir daqui, é puro CSS, mas podemos usar as variáveis do PHP */
body {
    background-color: #FFFFFF;
    font-family: Arial, sans-serif;
    color: <br />
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;
    margin: 0;
    padding: 0;
}

header {
    background-color: #106c69;
    padding: 20px;
    text-align: center;
}

nav a {
    color: #106c69;
    text-decoration: none;
}

footer {
    background-color: #106c69;
    color: #fff;
    padding: 10px;
    text-align: center;
}