In Genesis you can set an Category/Archive headline and intro text value inside the man Category edit area; WP Dasboard > Posts > Categories

genesis-category-header-text

The markup gets added in an .archive-description inside the main .content

genesis-category-header-inside-main

This is fine in almost every instance, but if you apply a masonry style layout the title and intro are overlapped with absolute positioning.

genesis-category-header-absolute-overlap

The title and intro text need to be moved above the main content, add in your Child themes function.php file:

remove_action( 'genesis_before_loop', 'genesis_do_taxonomy_title_description', 15 );
add_action( 'genesis_before_content', 'genesis_do_taxonomy_title_description', 15 );

Resulting in no overlap, the title and intro are removed from the original location and added to a new one, this example uses the genesis_before_content, or change the destination hook to an area of your choice.

genesis-category-header-no-overlap