body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background-color: #f9f9f9;
    color: #fff;
    padding: 0;
    text-align: center;
}

header h1 {
    padding: 20px 0;
    margin: 0;
}

main {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: #003366;
}

form label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
}

form input[type="text"],
form input[type="email"],
form input[type="submit"] {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    box-sizing: border-box;
}

form input[type="submit"] {
    background-color: #003366;
    color: #fff;
    border: none;
    cursor: pointer;
    margin-top: 20px;
}

form input[type="submit"]:hover {
    background-color: #0055a5;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ccc;
}

th, td {
    padding: 10px;
    text-align: left;
}

th {
    background-color: #003366;
    color: #fff;
}