body {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #1a1a1a;
    height: 100vh;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container {
    text-align: center;
    color: #fff;
}

#ruleta {
    border: 5px solid #fff;
    border-radius: 50%;
    background-color: #333;
}

#spinButton {
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
}

#resultado {
    margin-top: 20px;
    font-size: 24px;
    color: #fff;
}