body {
    background-color: #121212;
    color: #00ff99;
    font-family: 'Courier New', Courier, monospace;
    text-align: center;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}
button {
    background-color: #222;
    color: #00ff99;
    border: 2px solid #00ff99;
    padding: 10px;
    margin: 10px;
    cursor: pointer;
    transition: transform 0.2s;
}
button:hover {
    transform: scale(1.05);
}
.collapsible {
    display: block;
    margin: 10px 0;
}
input, textarea {
    width: 80%;
    margin: 5px;
    padding: 10px;
    background-color: #333;
    color: #00ff99;
    border: 1px solid #00ff99;
}
a {
    color: #00ff99;
    text-decoration: none;
    display: block;
    margin-top: 20px;
}