How do I remove the www on a domain?

Hey guys, I would like to know how to remove the www on the domain. When I place a www on the front of my url it is different from when I don't put the www. Is their a way to fix this problem?

 

With a simple mod_rewrite directive in your .htaccess file

Options +FollowSymlinks
RewriteEngine on
RewriteCond %{http_host} ^www\.yourdomain\.com [nc]
RewriteRule ^(.*)$ http://yourdomain.com/$1 [r=301,nc]

Code (markup):

 

Thanks.