I saw this site http://www.misstisdale.net. I think it's wonderful and I want to make a site like that.

Is that a CSS site? How can I make a website like that?

After carefully reviewing any source code it is definitely a css site, with some need features and codes. Maybe if you wanted to learn to make sites such as this one you can learn like many others have by viewing the source code and creating and replacing style sheets as well. This is a great way to learn the tricks that others have done.