Captcha

Thank you for developing this marvelous module. I am using it on the user registration page in conjunction with the captcha module. Perhaps this is by design, but in addition to the username and password labels, the captcha label -- "Math Question" -- also shows up in the field where one is supposed to put the sum of the numbers. The field is small, perhaps 5 characters across, while the the phrase "Math Question" is of course considerably longer in terms of characters. Any way to segregate the captcha field from the others? Thanks!