how do I center pricing table rows and make the width 100%

The feature rows of the pricing table appear to be right aligned and not full width within the payment period and plan columns. This causes my chosen blue column color to appear beside each feature row as shown in the image attachment included. I need my chosen blue column color to appear only on the top of each column and not extended to feature rows. The solution I believe requires a center alignment and full width of the feature rows. How do I go about this? I don't mind editing CSS files as I am a programmer