body {
    background-color: #f8f9fa;
}

.card {
    background-color: #ffffff;
}

.loader {
    text-align: center;
}

.progress {
    height: 20px;
}

.progress-bar {
    background-color: #007bff;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
}