Formatting Reports

[pucovsky]

Can somebody suggest what's the best practice in formatting reports?

HTML for instance. If I set formatting, my report displays correctly in MS IExplorer but is messed up in Firefox. If I generate PDF using the same formatting (Positioning, Sizes etc.) the report is even more messed up.

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Example: I have three lists that use the same query and display the same columns. They are positioned vertically (below/above each other). I want the same column from each of the three lists to be same size. Therefore I set the width of each column in pixels. ---> MSIE renders this without problems, but FF don't.
... I also want a one row table above lists with the number of cells equal to number of columns in list. And, of course, with the width of cells equal to widths of columns. But even when I set the same width of both, when rendered in browser they're not the same size! I'm really helpless here.