What's the difference between a webpage and a text file? CSS. See how to use CSS styles to format your content when working in Adobe Dreamweaver CS4. Whether you're new to Adobe's popular WISYWIG HTML editor or a seasoned web development professional just looking to better acquaint yourself with the CS4 workflow, you're sure to be well served by this video tutorial. For more information, including a step-by-step overview, watch this free video guide.