body {
    background-color: #f8f9fa;
}
.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
    margin-bottom: 1rem;
}
@media (max-width: 768px) {
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    .card-header {
        font-size: 1rem;
    }
}