body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
}

#ruleta {
    position: relative;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    overflow: hidden;
}

canvas {
    display: block; /* removes bottom space/gap */
    background: radial-gradient(circle, #fff, #ddd);
}

button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 10px 20px;
    font-size: 16px;
    color: #fff;
    background-color: #007BFF;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    outline: none;
}

button:hover {
    background-color: #0056b3;
}