Use W3C web service to check compliance with HTML, XHTML, SMIL, MathML and other standards
Site name: W3C Markup Validation Service
Website URL: http://validator.w3.org/
How to quickly check the page's compliance with HTML, XHTML, SMIL, MathML and other standards? We can through the W3C validation service, as long as the link to http://validator.w3.org/ enter the URL, press the [Check] button.
There are 15 errors three warnings, it seems to be a check
Original: Large column using the W3C web service to check compliance with HTML, XHTML, SMIL, MathML and other standards