body {
    font-family: 'Arial', sans-serif;
    background-color: #fafafa;
    margin: 0;
    padding: 0;
}

#container {
    width: 80%;
    max-width: 1100px;
    margin: 20px auto;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

header {
    background-color: #3F51B5;
    color: white;
    padding: 20px;
    text-align: center;
}

main {
    padding: 20px;
}

main section {
    margin-bottom: 20px;
}

footer {
    background-color: #3F51B5;
    color: white;
    text-align: center;
    padding: 10px;
}