.panel-heading [data-toggle="collapse"]:after {
        font-family: 'Glyphicons Halflings';
        content: "\e072"; /* "play" icon */
        float: right;
        color: #F58723;
        font-size: 18px;
        line-height: 22px;
        /* rotate "play" icon from > (right arrow) to down arrow */
        -webkit-transform: rotate(-90deg);
        -moz-transform: rotate(-90deg);
        -ms-transform: rotate(-90deg);
        -o-transform: rotate(-90deg);
        transform: rotate(-90deg);
    }

    .panel-heading [data-toggle="collapse"].collapsed:after {
        /* rotate "play" icon from > (right arrow) to ^ (up arrow) */
        -webkit-transform: rotate(90deg);
        -moz-transform: rotate(90deg);
        -ms-transform: rotate(90deg);
        -o-transform: rotate(90deg);
        transform: rotate(90deg);
        color: #454444;
    }