#rev_slider_2_1 rs-sbg {
    filter: brightness(0.48);
}
#rev_slider_2_1 [id$="-layer-1"],
#rev_slider_2_1 [id$="-layer-2"] {
    color: #fff !important;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}
#rev_slider_2_1 [id$="-layer-4"] {
    color: #fff !important;
    border-color: #fff !important;
    background-color: transparent !important;
}