#container {
    position: fixed;
    left: 100px;
    top: 200px;
    max-width: 500px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
#container h2{
    color:black;
}
textarea {
    width: 100%;
    height: 150px;
    padding: 12px;
    font-size: 16px;
    box-sizing: border-box;
    resize: none;
}

button {
    margin-top: 15px;
    margin-right: 10px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
}

#startBtn {
    background: #28a745;
    color: white;
}

#stopBtn {
    background: #dc3545;
    color: white;
}

button:disabled {
    background: #aaa !important;
    cursor: not-allowed;
}

#status {
    margin-top: 10px;
    font-style: italic;
    color: #555;
}