body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header, footer {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 1em 0;
}

main {
    padding: 2em;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1em;
}

th, td {
    border: 1px solid #ccc;
    padding: 0.5em;
    text-align: center;
}

th {
    background-color: #f2f2f2;
}