How to create a border around text and fill it in with color

Hello,

I'm creating a flyer with Adobe Acrobat and I'm trying to create a border around some text and fill it in with color to make it look more professional. I was able to create something using the drawing tools (rectangle shape) but it would just cover the text. There is QR code that I would like to include with the text. Would that make it more difficult to do? Help! 

I've included an example of what I want that portion of the text on the flyer to look like. 

Thank you in advance.