A sitepoint member has kindly pointed out this site www.davidclick.com is not cross browser compatible :-( in other words the layout breaks down in certain browsers. Originally I tested it in Safari, IE & Firefox thinking that would be good enough but it seems ive been mistaken

I need to know how to fix this myself, i dont have the money to pay anyone, the cross browser screen checkers that are worth it cost cash so
its down to me.

So my question is please..."Should the first step be validate the CSS & HTML to W3 standards"

Any advice welcome :-)