a[data-toggle=collapse]{
    font-weight: bold;
    padding-left: 25px;
    position: relative;
    display: block;
    margin-bottom: 10px;
}

a[data-toggle=collapse]:before{
    position: absolute;
    content: "\f068";
    font-family: FontAwesome, sans-serif;
    font-weight: normal;
    top: 2px;
    left: 5px;
}

a[data-toggle=collapse].collapsed:before{
    position: absolute;
    content: "\f067";
    font-family: FontAwesome, sans-serif;
    font-weight: normal;
    top: 2px;
    left: 5px;
}