body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
    color: #333;
}
header {
    background: #0d47a1;
    color: white;
    padding: 2rem;
    text-align: center;
}
.logo {
    color: #ffca28;
}
main {
    padding: 2rem;
}
footer {
    text-align: center;
    padding: 1rem;
    background: #eee;
    margin-top: 2rem;
}