body {
    background-color: white;
    color: black;
    font-family: sans-serif;
}
header {
    padding: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
h1 {
    font-size: 2rem;
    font-weight: bold;
}
main {
    padding: 2rem;
}
footer {
    padding: 1rem;
    text-align: center;
    font-size: 0.8rem;
}