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

header {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 10px;
}

main {
    padding: 20px;
}

.registration {
    max-width: 600px;
    margin: 0 auto;
}

label {
    display: block;
    margin: 10px 0 5px;
}

input, select {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.submit-button {
    background-color: #28a745;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.submit-button:hover {
    background-color: #218838;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
    position: fixed;
    width: 100%;
    bottom: 0;
}