Yes, you can.
In the page editor, hover over the page preview and click the art icon.

This opens a chat box where you can ask for any design changes, separately for desktop and mobile.
For example, you can say:
"Change the hero title to 36px on desktop and 24px on mobile".

LandingRabbit will apply those changes for you in a few seconds. When you preview the page in both desktop and mobile views, you'll see that each screen has a different font size after your changes.
You can adjust (at least):
All of these can be customized independently for desktop and mobile layouts.
If you need any help with design or have feature suggestions, don’t hesitate to send us a message via [email protected]