body {
    font-family: Arial, sans-serif;
    background-color: #111;
    color: #eee;
    margin: 0;
    padding: 0;
}

.container {
    padding: 20px;
}

button {
    display: block;
    width: 90%;
    margin: 10px auto;
    padding: 10px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    background-color: #222;
    color: #eee;
    cursor: pointer;
}

button:hover {
    background-color: #444;
}

input {
    display: block;
    width: 90%;
    margin: 10px auto;
    padding: 10px;
    font-size: 16px;
    border-radius: 6px;
    border: 1px solid #555;
    background-color: #222;
    color: #eee;
}

.hidden {
    display: none;
}

.section {
    margin-top: 20px;
}