Each template for the Adobe AIR layout has an associated style sheet called exStyle.css. You can locate this file in [Project folder]\!SkinSubFolder!\[skin name] and directly modify the styles in a text editor.
tip: RoboHelp stores the default exStyle.css file in [Install folder]\AIRHelpExt\skins\[skin name]\SkinTemplate. Refer to the comments in this file while editing a style sheet.
After you modify the style sheet, compile the CSS file to generate a SWF file.
1)In the Output Setup pod, expand the Skins folder.
2)Right-click a skin. Select Compile.