body.single-post, 
body.single-post .site-main, 
body.single-post .elementor-page,
body.single-post .elementor,
body.single-post .elementor-section-wrap,
body.single-post .elementor-section,
body.single-post .elementor-container,
body.single-post .elementor-widget-wrap,
body.single-post .hentry,
body.single-post .entry-content,
body.single-post #content,
body.single-post #primary,
body.single-post #main {
    background-color: #000000 !important;
}

body.single-post *, body.single-post p, body.single-post h1, body.single-post h2, body.single-post h3, body.single-post h4, body.single-post h5, body.single-post h6, body.single-post span {
    color: #ffffff;
}