I would try what wahm recommended. I use the % in formatting my tables so that no matter what screen res the viewer is on it adjusts accordingly to fit their screen. I am currently using 80% on mine. Here is an example.
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Havne't tried coding with CSS yet - would be something I am interested in learning but I still use table tags LOL. Easier for my slow brain to comprehend, especially with the boys running around screaming at each other.