.card,.card-header
{
    background-color: transparent !important;
    border: none;
    padding: 0;
    margin-bottom: 20px;
}
.card
{
    box-shadow: 0 2px 25px 0 rgba(110, 130, 208, .18);
}

.btn-link
{
    width: 100%;
    height: 60px;
    color: #000;
    font-weight: bold;
    text-align: left;
    text-decoration: none;
}

.card-body
{
    background: #e8eeff;
}
.btn-link::after
{
    content: '\2212';
    width: 35px;
    font-size: 25px;
    text-align: center;
    border-radius: 5px;
    right: 15px ;
    top: 11px;
    position: absolute;
    background:  #e8eeff;
}
.btn-link.collapsed::after
{
    content: '\002B';
}