body {
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(0,0,0,.125);
}

.accordion-button:not(.collapsed) {
    background-color: #fff;
}

.card-group-a {
    background: #E3F2FD;
    color: #0D47A1;
}

.card-group-b {
    background: #E8F5E9;
    color: #1B5E20;
}

.card-group-c {
    background: #FFF8E1;
    color: #E65100;
}

.card-group-d {
    background: #FFEBEE;
    color: #B71C1C;
}

.card .list-group-item {
    background: #fff;
    color: inherit;
}

/* Make "SeeAll" button readable on all cards */
.card .btn-outline-light {
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.6);
}

.card-group-c .btn-outline-light {
    color: #212529 !important;
    border-color: rgba(0, 0, 0, 0.4);
}

/* Optional: soften the list inside cards */
.card .list-group-item {
    border-radius: 6px;
    background: rgba(255,255,255,0.9);
    color: #212529;
}