Add test using the default download server used by the software This should help to highlight problems in the real environement but needs to be adapted when the server / server layout changes just as the software..

.figure img {
    border: 1px solid lightgrey;
    margin-bottom: 10px;
    padding: 4px;
}
.figure .caption {
    margin-top: 0px;
    margin-bottom: 20px;
}