what is the meaning of the following line
<xsl:template match="/" and>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/tr/wd-xsl">

It means that the template and stylesheet of the content management system you're using (or which the web site you're visiting is using) meets the strict XML standards of the Worldwide Web Consortium (http://www.w3.org).

wat is the meaning of the following line
<xsl:template match="/" and>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/tr/wd-xsl">
Can't understand.. can I get more detailed answer sir please...

If you want more information, then please provide more information. Precisely where is this line of code coming from? Where are you finding it? Why do you want to know what it means?