HTML and CSS Reference
In-Depth Information
Pass the URL to the service yourself by using this link in the address bar:
http://validator.w3.org/check?uri=http%3A%2F%2Fhtmlref.com%2Fch1%2Fmalforme
dhelloworld.html
By reading the validator's messages about the errors it detected, you can find and
correct the various mistakes. After all mistakes are corrected, the document should validate
cleanly:
Web developers should aim to start with a baseline of valid markup before trying to
address various browser quirks and bugs. Given that so many Web pages on the Web are
poorly coded, some developers opt to add a “quality” badge to a page to show or even
prove standards conformance:
