Adding CSS ID or Class to target shortcode output

Love this plugin. It’s the second time I’m using it on a website.

However, this time around I have an issue with the output. There are no classes or IDs wrapping the output for me to target the shortcode content. I realize I can just switch to Text mode and add a wrapper for the shortcode content, but my client is not that tech savvy and will freak out if I tell them they have to mess with any type of code.

Is there some snippet I can add to the functions.php that would add a class or an ID to the shortcode output… or some other solution, so I can target the output directly?

Thanks!

https://www.ads-software.com/plugins/reusable-text-blocks/