Border formatting

I have a spread sheet that I need help with some border issues.

In cell b34 is a drop down menu where either "my company" or "customer" is selected. I than have a formula in b35 so that if "customer" is selected text appears but if "my company is selected (which is what it will be 95% of the time) it remains blank. In cells c35, d35 and e35 I have added a bottom border for an answer line for when "customer" is selected. Is there a way to make the lines appear only if "customer" is selected in b34 like I did with the text in b35?

Set conditional formatting on cell b35 as follows:
=$B$34="customer"

format the border as you see fit.