Whitecrest said:
Sadly validation is meaningless with todays browsers (any of
them), if you are concerned as to how your page will work.
Validation is good to check if you are headed in the right
direction. After you validate, you pop back and see if it works
in the major browsers, then to make the appropriate (non
validating if need be) changed to make it work right.
Quite right, and sensible advice. Which is why I repeated it.
You can often tell when a page has been written with scant regard to
the users, but some geeky idealistic motivation, by those little
yellow boxy icons with 'W3C validated' or some such on. The worst
examples have more than one such icon.