Fluid Design Tips - %age width or not?

Is %age width of divs and containers a good way to do fluid design?

Can you please give me any other tips?

I want a website that looks extremely professional and good with little programming, this website is related to online shopping. So it must have login/logout interface.

Juggernaut Websites

Yes, a percentage width will likely give you a more desirable affect when creating a fluid layout, unlike a fixed width (pixels), it will expand to the size necessary on every resolution. Usually there is no issues using a percentage to specify the width, unlike positioning.

See this post for more.