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[Lynne]

You may override CSS. You just haven't told us the exact rule you wish to override so we can't see exactly where it is in your page (which you also have not linked to) and so we can't tell you what to do. Also, even if you do a new basic page, I'll bet you still use a layout/grid and my guess is the CSS is in there. But, we won't know until you tell us exactly what you need to change.