#ste-calc .panel-heading .accordion-toggle:after {
    /* symbol for "opening" panels */
    font-family: 'Glyphicons Halflings';  /* essential for enabling glyphicon */
    content: "\2212";    /* adjust as needed, taken from bootstrap.css */
    float: right;
    color: grey;
}
#ste-calc .panel-heading .accordion-toggle.collapsed:after {
    /* symbol for "collapsed" panels */
    content: "\002b";    /* adjust as needed, taken from bootstrap.css */
}
#ste-calc .panel-heading {padding: 0}
#ste-calc .panel-title a {display:block; padding: 10px 15px}
#ste-calc .sticky-box {position: -webkit-sticky; position: sticky; top: 65px}
#ste-calc .btn-danger {color: #fff !important; background-color: #d9534f !important;}