I'm new here, so this is my first post
I have a question about keeping me at the top of google searchresults. I'm making a new site for a firm called [removed], which is an IT consultant firm here in Denmakr. Right now, almost their whole site is made of html documents, but i will make it to a CMS with wordpress. Their site is from 1993 and they are the top result if you search "windows kurser" in www.google.dk. They want to keep it that way, cause they are getting alot of customers from google.. So my question is: How do i keep the site being the first searchresult with the change of their site, from html to a wordpress CMS??
Thank you for helping me out








