Add Xhtml and Css verification buttons

i am developing a website and i got a requirement for adding the 开发者_C百科Xhtml and Css verification buttons from W3C site.i am trying from last 3 days but didn't got any solution that how to add it.can anyone help me out?

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The solution is on the w3c website. Add this to your page:

<p>
  <a href="http://validator.w3.org/check/referer"><img
      src="http://www.w3.org/Icons/valid-xhtml10"
      alt="Valid XHTML 1.0!" height="31" width="88" /></a>
</p>

There is a similar block for the CSS validator. You should probably make sure your page actually is valid XHTML or CSS, of course.

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After you validate your XHTML (and pass validation, of course), you'll be given the markup to include the "valid" icons. You can do the same thing for you CSS, too.

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For CSS Validator you can use the following site

http://jigsaw.w3.org/css-validator/validator/

To validate a site you can set the link of the button to

http://jigsaw.w3.org/css-validator/validator?uri=sitename&profile=css21&usermedium=all&warning=1&lang=en

where you set the site name in the uri query string parameter.

For XHTML you can use the following link

http://validator.w3.org/check?uri=sitename&charset=%28detect+automatically%29&doctype=Inline&group=0

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Once your site passes, you'll see the buttons. You can see what the button code looks like here http://validator.w3.org/ and using the url www.w3c.org