body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #fff;
    color: #000;
}
header, footer {
    background-color: #000;
    color: white;
    padding: 1em;
    text-align: center;
}
nav a, .lang-switch a {
    color: pink;
    margin: 0 1em;
    text-decoration: none;
}
main {
    padding: 2em;
}
.lang-switch {
    text-align: right;
    margin: 1em;
}