/* Custom styles */
body {
    background-color: #f8f9fa;
    font-family: Arial, sans-serif;
}

.container {
    max-width: 960px; /* จำกัดความกว้างสูงสุดของเนื้อหา */
}

.card-header.bg-primary {
    background-color: #007bff !important; /* Blue */
}
.card-header.bg-warning {
    background-color: #ffc107 !important; /* Yellow */
}
.card-header.bg-danger {
    background-color: #dc3545 !important; /* Red */
}
.card-header.bg-success {
    background-color: #28a745 !important; /* Green */
}
/* ปรับแต่งปุ่ม nav-link */
.nav-pills .nav-link.active,
.nav-tabs .nav-link.active {
    font-weight: bold;
}/* CSS Document */