.mediathek-content{
    border: 1px solid #ccc;
    padding: 15px;
    height: 400px;
    overflow: auto;
}

.mediathek .navbar{
    width: 100%;
}

.nav > li > a:hover, .nav > li > a:focus {
    background-color: #34779d;
}

.nav .open > a, .nav .open > a:hover, .nav .open > a:focus{
    background-color: #34779d; 
}