In Core-portal basic, you can adjust the margins and rounding of the tiles in the lookbook. Both settings can be found in the CMS under Core-portal basic> Settings > Styling.
Margin for lookbook tiles
This setting determines the spacing between tiles in the lookbook. A higher value results in more space between tiles. Refer to the link for more information on CSS margin.
Border radius for lookbook tiles
This setting determines the corners of the tiles in the lookbook. A higher value results in more rounded corners. Refer to the link for more information on CSS border-radius.
By adjusting these settings, you have the ability to customize the display of tiles in the lookbook to your preference.