Flux has an amazing WYSIWYG rendering engine, which means you can drag, stretch, and move objects like a you can in a DTP application, and your webpages will look exactly how you intended.* Flux will generate all the code for you, with no unneccesary tags. Size, position, even margins and padding can be altered with handles on the elements themselves. If the properties are stored in external CSS stylesheets, these are automaticaly updated.

Requirements
At least 512MB of RAM
Mac OS X Leopard or Snow Leopard (Recommended)
Both Intel and PowerPC are supported
An open mind