Some Basics...

Use proportional units
- Stay within screen boundaries

Better for low vision folks and mobile. Helps prevent horizontal scrolling.

Good table

Good table

Dates Meals Hotels Transport
25-Aug-97 37.74 112.00 45.00
26-Aug-97 27.28 112.00 45.00
Subtotal 65.02 224.00 90.00

<table width="60%" border="1">

Bad Table

Dates Meals Hotels Transport
25-Aug-97 37.74 112.00 45.00
26-Aug-97 27.28 112.00 45.00
Subtotal 65.02 224.00 90.00

<table width="600px" border="1">

Add a table name

Use Table Head cells

Explain the table

When possible - Simplify