body {
    background: #0d0d0d;
    color: #00ffcc;
    font-family: 'Courier New', monospace;
    text-align: center;
}
button {
    background: #1a1a1a;
    border: 1px solid #00ffcc;
    color: #00ffcc;
    padding: 10px;
    margin: 5px;
    cursor: pointer;
}
button:hover {
    background: #00ffcc;
    color: #0d0d0d;
}
#log {
    margin-top: 20px;
    max-height: 200px;
    overflow-y: auto;
    text-align: left;
    padding: 10px;
    border: 1px solid #00ffcc;
}