CSS style issue with menu

Hello, I am trying to get my css to display correctly for my search menu buttons. I’ve gotten them to line up except for one line that is separating the images in the middle. please visit to get an idea of what I am looking at. If there is someone who knows what CSS I should apply to fix this extra line that is appearing inbetween the State and Job type buttons that would be very helpful to me! ??

Thanks,

Brian