body, html {
    font-family: Arial, sans-serif;
    padding: 0;
    margin: 0;
    background: #f0f0f0;
}

.container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

input[type="text"], input[type="number"] {
    width: calc(100% - 22px);
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 10px 20px;
    border: none;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    border-radius: 4px;
    margin-right: 10px;
}

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

#progressContainer {
    width: 100%;
    background-color: #eee;
    border-radius: 4px;
    margin: 20px 0;
}

#progressBar {
    height: 20px;
    background-color: #007bff;
    width: 0%;
    border-radius: 4px;
}