body.single-blog #header {
    background-color: #eeeee7 !important;
}

body.single-blog #header::before {
    content: "" !important;
    position: absolute !important;
    top: 0 !important;
    bottom: 0 !important;
    left: 50% !important;
    margin-left: -50vw !important;
    width: 100vw !important;
    background-color: #eeeee7 !important;
    z-index: -1 !important;
    pointer-events: none !important;
}

body.single-blog .blog-nav {
    background-color: #eeeee7 !important;
}