body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #000;
}
header, footer {
    background-color: #003366;
    color: white;
    padding: 20px;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
main {
    padding: 40px;
    max-width: 1000px;
    margin: auto;
}
h1, h2 {
    color: #003366;
}
form input, form textarea {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    font-size: 1em;
}
form button {
    background-color: #003366;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}
form button:hover {
    background-color: #0055aa;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table, th, td {
    border: 1px solid #ccc;
}
th, td {
    padding: 10px;
    text-align: left;
}