Tips for Creating Consistent Looking Web Pages

1. When you create a new web site, Add a master page that you base all other pages on.
2. As soon as you find yourself adding styling information to complex controls like GridView or TreeView and Menu, consider creating a skin for them.
3. When creating skins or setting properties directly to the control, consider using the CssClass property instead.
4. A great time saver is to the Template feature of VWD.
 

Remember 

A consistent look is important to give your site a professional and attractive look.
ASP.NET master pages define a cintralized look and feel.
Themes are used to change the look and feel of the pages in your site and the controls they contain.