Hi, Francesco

Thank you for reaching out to us.

I'm sorry to disappoint you, but unfortunately, something like this is not possible with the plugin's built-in features.

You can find more information about the available built-in customization features here: https://wpamelia.com/customize-design/.

Probably It can be done with some custom CSS, but as for custom CSS - using custom CSS, or custom JS requires some coding skills, and it is assumed that you're familiar with CSS, and/or JS and that you can find selectors you need for custom work. 

The customization of the plugin is allowed through these code segments, but preparing custom solutions is not included in the provided support for the plugin, so, unfortunately, we can't help you with that.

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

If you need help with adding custom JS to the page, please take a look at this article.

It probably can be done with some custom work, we can recommend this service for customization: https://wpkraken.io/?tms-plugins. They do develop such solutions, so you can also send your inquiry to them.

If you have any further questions or issues, please feel free to open a new ticket, and we'll gladly help.

Have a great day!