body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #1a1a1a;
    color: #ffffff;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    color: #4a9eff;
    margin-bottom: 30px;
}

h2 {
    color: #ffffff;
    margin-bottom: 15px;
}

.speed-control {
    background-color: #2a2a2a;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.button-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

button {
    background-color: #4a9eff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #357abd;
}

button:active {
    background-color: #2a5f9a;
}

p {
    color: #cccccc;
    margin: 10px 0;
}