Archive Title Block
The Archive Title Block will display the name of the Category, Tag or other Taxonomy, on your theme’s archive pages. This block will only be useful once you can edit your Theme’s templates and would only display on archive pages.
Once you've added the block, there are further options available in the Settings Sidebar including an option to select the font size, colour and background color. You can also select the heading level (H1-H6) for the title using the Block Toolbar.