Comment on Technical Support by Mark.

WordPress Technical Support I guess my question really is – how would you give a custom page template a totally new look. What is best practice for SEO and speed.

Would you use a new CSS (adding code to header.php) or simply add to the existing CSS?

I read a lot of ways to do this on forums, .. but what would you do if you want a radical change of a page template using css, including a background image. My objective is to create a few landing pages and do A/B tests so I will create a few page templates for this.