Background-image on stretched layout in Enfold

style.css

html.html_stretched {
    background: url('/wp-content/uploads/image.png') !important;
    background-attachment: scroll !important;
    background-position: top center !important;
    background-color: #092540 !important;
    background-repeat: no-repeat !important;
	-webkit-background-size: cover !important;
	-moz-background-size: cover !important;
	-o-background-size: cover !important;
	background-size: cover !important;
}

.alternate_color, .alternate_color .site-background, .alternate_color .first-quote, .alternate_color .related_image_wrap, .alternate_color .gravatar img .alternate_color .hr_content, .alternate_color .news-thumb, .alternate_color .post-format-icon, .alternate_color .ajax_controlls a, .alternate_color .tweet-text.avatar_no, .alternate_color .toggler, .alternate_color .toggler.activeTitle:hover, .alternate_color #js_sort_items, .alternate_color.inner-entry, .alternate_color .grid-entry-title, .alternate_color .related-format-icon, .grid-entry .alternate_color .avia-arrow, .alternate_color .avia-gallery-big, .alternate_color .avia-gallery-big, .alternate_color .avia-gallery img, .alternate_color .grid-content, .alternate_color .av-share-box ul, #top .alternate_color .av-related-style-full .related-format-icon, .alternate_color .related_posts.av-related-style-full a:hover, .alternate_color.avia-fullwidth-portfolio .pagination .current, .alternate_color.avia-fullwidth-portfolio .pagination a, #main, .html_stretched #wrap_all, .main_color .site-background, .main_color .first-quote, .main_color .related_image_wrap, .main_color .gravatar img .main_color .hr_content, .main_color .news-thumb, .main_color .post-format-icon, .main_color .ajax_controlls a, .main_color .tweet-text.avatar_no, .main_color .toggler, .main_color .toggler.activeTitle:hover, .main_color #js_sort_items, .main_color.inner-entry, .main_color .grid-entry-title, .main_color .related-format-icon, .grid-entry .main_color .avia-arrow, .main_color .avia-gallery-big, .main_color .avia-gallery-big, .main_color .avia-gallery img, .main_color .grid-content, .main_color .av-share-box ul, #top .main_color .av-related-style-full .related-format-icon, .main_color .related_posts.av-related-style-full a:hover, .main_color.avia-fullwidth-portfolio .pagination .current, .main_color.avia-fullwidth-portfolio .pagination a, .header_color table, .header_color .widget_nav_menu ul:first-child>.current-menu-item, .header_color .widget_nav_menu ul:first-child>.current_page_item, .header_color .widget_nav_menu ul:first-child>.current-menu-ancestor, .header_color .pagination .current, .header_color .pagination a, .header_color.iconbox_top .iconbox_content, .header_color .av_promobox, .header_color .toggle_content, .header_color .toggler:hover, .header_color .related_posts_default_image, .header_color .search-result-counter, .header_color .container_wrap_meta, .header_color .avia-content-slider .slide-image, .header_color .avia-slider-testimonials .avia-testimonial-content, .header_color .avia-testimonial-arrow-wrap .avia-arrow, .header_color .news-thumb, .header_color .portfolio-preview-content, .header_color .portfolio-preview-content .avia-arrow, .header_color .av-magazine .av-magazine-entry-icon, .header_color .related_posts.av-related-style-full a, .header_color .aviaccordion-slide, .header_color.avia-fullwidth-portfolio .pagination, .header_color .isotope-item.special_av_fullwidth .av_table_col.portfolio-grid-image, .header_color .header_bg, .header_color .main_menu .menu ul li a, .header_color .pointer_arrow_wrap .pointer_arrow, .header_color .avia_mega_div, .footer_color .site-background, .footer_color .first-quote, .footer_color .related_image_wrap, .footer_color .gravatar img .footer_color .hr_content, .footer_color .news-thumb, .footer_color .post-format-icon, .footer_color .ajax_controlls a, .footer_color .tweet-text.avatar_no, .footer_color .toggler, .footer_color .toggler.activeTitle:hover, .footer_color #js_sort_items, .footer_color.inner-entry, .footer_color .grid-entry-title, .footer_color .related-format-icon, .grid-entry .footer_color .avia-arrow, .footer_color .avia-gallery-big, .footer_color .avia-gallery-big, .footer_color .avia-gallery img, .footer_color .grid-content, .footer_color .av-share-box ul, #top .footer_color .av-related-style-full .related-format-icon, .footer_color .related_posts.av-related-style-full a:hover, .footer_color.avia-fullwidth-portfolio .pagination .current, .footer_color.avia-fullwidth-portfolio .pagination a {   
	background: transparent !important;
}

.main_color, .main_color .site-background, .main_color .first-quote, .main_color .related_image_wrap, .main_color .gravatar img  .main_color .hr_content, .main_color .news-thumb, .main_color .post-format-icon, .main_color .ajax_controlls a, .main_color .tweet-text.avatar_no, .main_color .toggler, .main_color .toggler.activeTitle:hover, .main_color #js_sort_items, .main_color.inner-entry, .main_color .grid-entry-title, .main_color .related-format-icon, .grid-entry .main_color .avia-arrow, .main_color .avia-gallery-big, .main_color .avia-gallery-big, .main_color .avia-gallery img, .main_color .grid-content, .main_color .av-share-box ul, #top .main_color .av-related-style-full .related-format-icon, .main_color .related_posts.av-related-style-full a:hover, .main_color.avia-fullwidth-portfolio .pagination .current, .main_color.avia-fullwidth-portfolio .pagination a, .main_color .av-hotspot-fallback-tooltip-inner, .main_color .av-hotspot-fallback-tooltip-count {
    background-color: rgba(255, 255, 255, 0);
}