Different Page background colour

Hey @droyed,

Check if your theme has a category-xxxx class in the article tag of your content. The xxxx is the name of your category.

Use your browser’s inspector tool to find out.

Here’s what that looks like in Twenty Twenty-one.

article.category-test {
  background-color: cyan;
}

Notes:

1) That CSS only affects the main content area of my posts.

2) The different colours also show up on my main blog page too.

Just so you know.

But, it’s a start and it’s pure CSS like you wanted 😉

Have fun!