/* Ẩn card mặc định */
.main-inner,
#page,
#page-content,
#region-main,
#region-main > .card {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

#region-main > .card > .card-body {
    padding: 0 !important;
}

/* custom card */
.mycustomcard {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 2rem;
    margin: 2rem 0;
    opacity: 90%;
}