body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.container {
    text-align: center;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
}

select {
    margin: 10px;
    padding: 10px;
    font-size: 16px;
}

.hidden {
    display: none;
}

#progress-container {
    width: 100%;
    background-color: #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
}

#progress-bar {
    width: 100%;
    height: 20px;
    background-color: #76c7c0;
}