.panel-heading h4 a.collapsed::before {
    color: #333;
    content: "+";
    font-family: "HelveticaNeue-Light","Helvetica Neue Light","Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;
    font-size: 18px;
    font-weight: 200;
}
.panel-heading h4 a::before {
    color: #333;
    content: "−";
    font-family: "HelveticaNeue-Light","Helvetica Neue Light","Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;
    font-size: 18px;
    font-weight: 200;
}

.panel-heading h4 a {
    display: block;
    outline: 0 none;
    text-decoration: none;
}

.panel-title {
	font-size:inherit;
}