XML - Creating XSL File

For linking an xml file with its stylesheet file, add a line of code:

<xsl-stylesheet type="text/xsl" href="main.xsl">

Then defining your xsl file by

<?xml version="1.0">

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<data>

    <item>

        ...

    </item>

</data>

XML - Creating XSL File