. Launch a text editor, and open the pacific.css file. Add a style rule for an id named wrapper with width set to 80%, margin-right set to auto, and margin-left set to auto. 2. Launch a text editor, and open the index.html file. Add the HTML code to configure a div element assigned to the id wrapper that wraps, or contains, the code within the body section. Save and test your index.html page in a browser and youll notice that the page content is now centered within the browser viewport as shown in Figure 3.33. 3. Launch a text editor and open the yurts.html file. Add the HTML code to configure a div element assigned to the id wrapper that wraps, or contains, the code within the body section. Save and test your yurts.html page in a browser and youll notice that the page content is now centered within the browser viewport as shown in Figure 3.34.