.accordion .btn
{
    background-color: transparent;
    color: black;
    border: none;
}

.accordion .btn:focus
{
    text-decoration: none;
}

.card
{
    border: none;
    border-bottom: 1px solid var(--main-color)!important;
    border-radius: 0px;
}

.accordion .card .card-header
{
    padding: 0px;
    background-color: transparent;
}