When the Credit Card Number box and the CSC box receive the focus, a transition effect should appear that slowly adds a glowing brown shadow around the boxes. The glowing brown shadow appears but without a transition effect. Return to the code8-4_debug. css file and study the code that applies a transition effect to both the input#cardBox and input#CSC objects, and the input#csc:invalid style. Correct any mistakes you find in the code. Verify that when the Credit Card Number and CSC boxes receive the focus a transition effect appears that adds the glowing brown shadow to the boxes.