"One way to improve the readability of large tables is to color alternating rows. For example, the table below has a light gray background for the even rows and white for the odd ones. The rules for that are extremely simple:"

This is a Problem & Workaround Set for a series of CSS Boxes going from a simple single box, through 3 columns with a full width top box, all with variations.

Workarounds for CSS browser issues.

Introduction/2 Column CSS Templates