How do I create a border around a section of the form with CSS?

I've been trying unsuccessfully to create a border around a section of my form using CSS.  I don't know what I'm doing wrong but I could use some help (see lines 159-161 of the code).  I've got some basic knowledge of CSS, but I'm not understanding why when I put the code into the form, it does nothing.

I've uploaded a screenshot of the area (2nd page of form) that I've been trying to put  border around.

It seems that you have already applied borders to the fields by injecting some CSS code. I'm not sure if this effects in another border around the page section. Please allow me some time to check on this and get back to you with relevant information.

Thank you for your patience. 

Thanks for your efforts, Kiran.  I found a workaround.  I created a blank Textbox and used CSS to size it, create a border around it and used absolute positioning to put it over the fields.

Hello dgspencer,

Thank you for keeping us posted. Yes, that's another way of putting around a border in that area which is quite off vs the actual area of the form.

Feel free to let us know if you have other questions.

Thanks.