review https://codex.wordpress.org/Function_Reference/in_category vs https://codex.wordpress.org/Function_Reference/is_category
to check for a category archive, use https://codex.wordpress.org/Function_Reference/is_category
review https://codex.wordpress.org/Function_Reference/in_category vs https://codex.wordpress.org/Function_Reference/is_category
to check for a category archive, use https://codex.wordpress.org/Function_Reference/is_category