I am cleaning markup on a website for my first customer. I did not build the site; I want to remove the table-based design and replace it with proper CSS, before I add a shopping cart to the site. http://www.theresheglowsdayspa.com
I noticed by accident that the appearance will change if 'www' is removed from the URL.
Can someone explain what's going on here? Also, is there a best practice with 'www' or no 'www' in the URL?