You may want to look at below post where we discussed on the Custom DX component which is provided in the story book and also an enhanced version of it.
Also this one as well,
If its a strict requirement of this type of banner view, then assess the above posts and ensure that while you work with components, you need to take care of below aspects,
- Security
- Accessibility
- Maintenance
- Re-usability
- UI Guidelines
There is one more less preferred, dirty option, but you may want to give it a try. I won’t suggest it but had the Dynamic Text rule supported dynamic HTML content powered from Correspondence, i would have not thought about this.
It goes like this. You can go to your flow and on the assignment you will have Instructions for user option where you can provide a field value of type pyInstructions. Try to put your HTML code there for the banner display directly there. Of course get the styling right and keep it simple and display your instructions there. May be using a data page passing some parameters and fetch the instructions similar to what we do in the banner component.
Hope this helps
Regards
JC