@media (min-width: 1200px) {
    .span6 .thumbnail .rsm_fixed_height {
        min-height: 220px !important;
    }
}

@media (min-width: 980px) and (max-width: 1200px) {
    .span6 .thumbnail .rsm_fixed_height {
        min-height: 260px !important;
    }
}

@media (min-width: 768px) and (max-width: 979px) {
    .span6 .thumbnail .rsm_fixed_height {
        min-height: 320px !important;
    }
}

@media (max-width: 767px) {
    .span6 .thumbnail .rsm_fixed_height {
        min-height: 0 !important;
    }
}