Custom Accordian

.custom-accordian .btn{
    position: relative;
    width: 100%;
    text-align: left;
    text-decoration: none;
    color: #555;
}

.custom-accordian .btn.btn-link:before{
    position: absolute;
    content: "-";
    right: 0;
    top: 0;
    border: 1px solid #555;
    width: 30px;
    height: 30px;
    text-align: center;
    border-radius: 10px;

}

.custom-accordian .btn.btn-link.collapsed:before{
    /*position: absolute;*/
    content: "+";
}

.custom-accordian .card-header{
    background: #ccc;
}