.fslider .slide > a, .fslider .slide > a {
    width: 100% !important;
    height: 100% !important;
    max-height: 420px !important;
}

.fslider .slide > a, .fslider .slide > a > img {
    width: auto !important;
    max-width: 100% !important;
    max-height: 420px !important;
}