.accordion-button {
    background-color: inherit !important;
    padding-left: 0px !important;
    padding-right: 0px !important;
}
.accordion-button:not(.collapsed) {
    color: #000;
    box-shadow: none;
}
.accordion-button:not(.collapsed)::after {
    content: none;
}
.accordion-button::after {
    content: none;
}
.accordion-button:not(.collapsed) {
    font-weight: bold;
}

.accordion-flush .accordion-item:first-child {
    border-top: 1px solid rgba(0,0,0,.125) !important;
}
.accordion-item:last-child {
    border-bottom: 1px solid rgba(0,0,0,.125) !important;
}