.reader {
    width: 300px;
    height: 300px;
}
#iconQrCode {
    position: fixed;
    bottom: 70px;
    right: 20px;
    background: #ffc107;
}
.fa-big {
    font-size: 3rem;
}

/*
.accordion .card-header:after {
    font-family: 'FontAwesome';
    content: "\f068";
    float: right;
}
.accordion .card-header.collapsed:after {
    content: "\f067";
}
*/