body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #333;
}
header {
    background: #6a1b9a;
    color: white;
    padding: 1em;
    text-align: center;
}
nav {
    background: #00bcd4;
    padding: 0.5em;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 1em;
    text-decoration: none;
}
main {
    padding: 2em;
}
footer {
    background: #eee;
    text-align: center;
    padding: 1em;
    font-size: 0.9em;
}