Author Biography Block
The Author Biography Block will display the author biography for the current Post/Page. Although you can add this block into your normal Page or Post content, it will be more useful adding it to your theme’s templates using the Full Site Editor. The Post Author Biography details are typically seen at the bottom of Single Posts or Pages and allows you to provide further information to your readers in regards to who authored that particular page of content.
Once you've added the block, there are further options available in the Settings Sidebar. You can change the Text and Background colours, and you can also change various Typography settings like Font size, Appearance, Decoration, Line height, Letter case & Letter spacing. The Dimensions panels also allows you to specify the padding around the block.