<div>
Your DOCTYPE might be part of the issue.<br />
<br />
&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.0 Transitional//EN&quot; &quot;<a href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" rel="ugc">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>&quot;&gt;<br />
&lt;html xmlns=&quot;<a href="http://www.w3.org/1999/xhtml" rel="ugc">http://www.w3.org/1999/xhtml</a>&quot;&gt;<br />
<br />
Instead of that, try the HTML5 declaration:<br />
<br />
&lt;!DOCTYPE html&gt;<br />
&lt;html&gt;<br />
etc...
</div>


Your DOCTYPE might be part of the issue.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd [http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd]">
<html xmlns="http://www.w3.org/1999/xhtml [http://www.w3.org/1999/xhtml]">

Instead of that, try the HTML5 declaration:

<!DOCTYPE html>
<html>
etc...

<div>
<div class="content wysiwyg-content">
HI <br />
<br />
My site coding was W3C standards before i install the Facebook like box.<br />
Now as soon i installed the like box it is showing 7 errors on the site page.<br />
<br />
Anyone have got success to fix this issue.<br />
<br />
here is the link of like box plugin <br />
<a href="http://developers.facebook.com/docs/reference/plugins/like-box/" rel="ugc">http://developers.facebook.com/docs/reference/plugins/like-box/</a>&nbsp;<br />
<br />
<br />
My site is in PHP/My SQL<br />
<a href="http://www.axis-holiday.com" rel="ugc">www.axis-holiday.com</a>&nbsp;<br />
<br />
Please suggest 
</div>
</div>


HI 

My site coding was W3C standards before i install the Facebook like box.
Now as soon i installed the like box it is showing 7 errors on the site page.

Anyone have got success to fix this issue.

here is the link of like box plugin 
http://developers.facebook.com/docs/reference/plugins/like-box/ 


My site is in PHP/My SQL
www.axis-holiday.com 

Please suggest 

W3C validation error in Facebook like box

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

HTML (HyperText Markup Language) is the main markup language for creating web pages and other information to be displayed in a web browser, providing both the structure and content for what is sent from a web server through the use of tags. The current implementation of the HTML specification is HTML5.

HTML

Web development can range from developing the simplest static single page of plain text to the most complex web-based internet applications, electronic businesses, and social network services using a wide variety of languages and standards, including the familiar HTML, JavaScript and jQuery, ASP and ASP.NET, PHP, ColdFusion, CSS, PHP, Flex and Flash, but also the implementation of a broad list of standards including XML, WSDL, SSDL, VoiceXML and many more.