Changing Color Block after Clicking 'Older Posts' Button

I have the Activello theme and my blog is - When I scroll down and click the ‘older posts’ button to load more posts on the main page, the posts show up in a large block of colour and I have no idea how to change the background to white instead of the dark grey that it currently is. Help please! Thanks!

Hello adashofmum,

I hope you are doing well today.

You can use the following CSS code to remove the color by going to Appearance > Customize > Additional CSS and pasting it there.

/*White background color*/
.blog-item-wrap, article {
    background-color: white;

Best Regards,