Code validator?

[windrider07]

IS there a site or application out there that validates coding? I use CSE HTML Validator Lite but my site still acts weird towards various browsers. It will look one way to Firefox and look another way on Safari. I'm assuming this is because of the browser's ability to render the coding but is that the real deal? Many sites look great on all browsers....how does it work?

[Labrocca]

Best option is manual text changes. The official w3c validator does a good job of telling you the problem. Run it and then start fixing them one at a time. It's good practice and eventually you might not make xhtml mistakes at all.

http://validator.w3.org/

[andrewhall]

The official w3c validator does a good job of telling you the problem.

[parul1234]

I use w3c validator for my site