.single-post .single-banner .bg-img:before {
    width: 100%;
    height: 70%;
    background: linear-gradient(-180deg, rgba(0,0,0,0.98), transparent);
    content: ' ';
    position: absolute;
    left: 0;
    top: 0;
}

body.single-post header:not(.scrolled) img {
    filter: brightness(8);
}