body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background: #000;
    color: #fff;
    padding: 20px;
    text-align: center;
}

header nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
}

header nav ul li {
    margin: 0 15px;
}

header nav ul li a {
    text-decoration: none;
    color: #fff;
}

header nav ul li a:hover {
    text-decoration: underline;
}

.header-container {
    margin-top: 20px;
}

main {
    padding: 20px;
}

main section {
    margin: 20px 0;
}

footer {
    background: #f8f8f8;
    text-align: center;
    padding: 20px;
}

footer p {
    margin: 0;
}

form {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 0 auto;
}

form label {
    margin: 10px 0 5px;
}

form input, form textarea {
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

form button {
    padding: 10px;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

form button:hover {
    background: #333;
}