Sitemaps are generated with generators based on the links they follow to find a page. If you want to include the category, and especially if the generator is picking up no category; then you should...

You can also help speed up the process by saving the file with "quotes" around the name. This forces Windows to accept the file type.

Example:

SAVE AS: _________________

SAVE AS:...

The simplest way to center a page horizontally is to make a wrapper div and give it a margin: auto;. That works on all browsers that are used by the majority today.