.map-responsive{
    overflow:hidden;
    padding-bottom:200px;
    position:relative;
    height:0;
}

.map-responsive iframe{
    left:0;
    top:0;
    height:100%;
    width:100%;
    position:absolute;
}

.panel-title a:after {
    font-family:Fontawesome;
    content:'\f077';
    float:right;
    font-size:10px;
    font-weight:300;
}
.panel-title a.collapsed:after {
    font-family:Fontawesome;
    content:'\f078';
}