body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: #111;
    color: white;
    font-family: Arial, sans-serif;
}
.bar canvas {
    display: block;
}
.controls {
    margin-top: 10px;
    display: flex;
    gap: 10px;
}
button {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 16px;
    border-radius: 5px;
}
button:hover {
    background-color: #0056b3;
}