The following pages use a white background instead of the background color that has been specified in the theme options:

• 404 page
• search page
• theme builder pages

This CCS forces these pages to use the correct background color on all pages.

/* -- START Fix theme options background color -- */
#main-content{
background-color: initial !important;
}
/* -- END Fix theme options background color -- */Code language: CSS (css)

This CCS forces these pages to use the correct background color on the 404 and search pages.

/* -- START Fix background color on 404 and search page -- */
.error404 #main-content, .search #main-content{
background-color: initial;
}
/* -- END Fix background color on 404 and search page -- */Code language: CSS (css)

Note: you can also use the theme builder to create a template for these pages.