body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    text-align: center;
}

header {
    background: #333;
    color: white;
    padding: 10px 0;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

section {
    padding: 20px;
    margin: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.btn {
    display: inline-block;
    background: #007BFF;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
}

form input, form textarea {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button {
    background: #28a745;
    color: white;
    padding: 10px 15px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}