.gallery-one__top__bg {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: #093828;
    background-blend-mode: overlay;
    background-attachment: scroll;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    z-index: -1;
}