/* ... (Dein vorhandenes CSS) ... */

#speakBtn {
    padding: 10px 20px;
    margin-top: 20px;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 5px;
    background-color: #fff;
}

#controls {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
}

#controls label {
    margin-bottom: 5px;
}

#controls input[type="range"] {
    width: 200px;
}