body {
    font-family: monospace;
    background: #111;
    color: #eee;
    margin: 0;
    padding: 0;
}

nav {
    background: #222;
    padding: 10px;
    display: flex;
    gap: 10px;
}

nav a {
    color: #eee;
    text-decoration: none;
    padding: 4px 8px;
    border: 1px solid #555;
}

nav a:hover {
    background: #555;
}

.container {
    padding: 20px;
}

button {
    background: #333;
    color: #fff;
    border: 1px solid #555;
    padding: 5px 10px;
    cursor: pointer;
}

button:hover {
    background: #555;
}

input, select {
    background: #222;
    color: #eee;
    border: 1px solid #555;
    padding: 2px 5px;
}