They're all very minor, and you shouldn't have to worry about it. However, NS5 covers a whole lot of ground, and should be out in beta in December. No Netscape user in their right mind will stay with netscape 4.x when the big Lizard is availiable. The site usually has a global stylesheet- a look that is common to the whole site. I use this method because the browser only downloads a given linked stylesheet once for your whole site.
Every byte counts.
Note, however, because of this very fact, any DTML you use will only get interpreted once, when the global stylesheet is downloaded. In this method should go the styles you want to have across your site. I'll explain how in the next section . The next lines are your styles. Alternate stylesheets should also have a title attribute.