.fsp-outer .fsp-inner img{
    display: none;
    max-width: 100%;
}

@media screen and (min-width: 768px) {
    .fsp-outer .fsp-inner img.show-on-desktop {
        display: block;
    }
}
@media screen and (max-width: 767px) {
    .fsp-outer .fsp-inner img.show-on-mobile {
        display: block;
    }
}