body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

header {
    background-color: #0077cc;
    color: white;
    padding: 20px;
    font-size: 24px;
}

section {
    margin: 20px;
    padding: 20px;
    background: white;
    box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}

footer {
    margin-top: 20px;
    font-size: 14px;
    color: gray;
}