Hey Karen,
now I see which tile you had in mind :)
The 2×1 wide tile with the name of the respective tag appears automatically on each portfolio tag archive page, and contains the information about the current tag; it has been added as a best-practice approach to navigation, whereby the user should always know where she is located on the website at any given moment. If you wish to remove this, please delete or comment out lines 15-23 (both of them should start with a “div” tag) in the “taxonomy-tagportfolio.php” template file which is located in the theme root folder.
Sincerely,
Andrii / Satori Studio