CSS Styling to Customize WebHelp Output
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One way to customize WebHelp output is to use custom CSS styling. This method can be used to make small, simple styling changes or more advanced, precise changes. To implement the styling in your WebHelp output, you simply need to create the custom CSS file and reference it in your transformation scenario.

As a practical example, to hide the horizontal separator line between the content and footer, follow these steps:
  1. Create a custom CSS file that contains the following snippet:
    .footer_separator {
  display:none;
}
  2. Edit the WebHelp transformation scenario and open the Parameters tab.
    1. For a DITA transformation, set the args.css parameter to the path of your custom CSS file. Also, set the args.copycss parameter to yes to automatically copy your custom CSS in the output folder when the transformation scenario is processed.
    2. For a DocBook transformation, set the html.stylesheet parameter to the path of your custom CSS file.
  3. Run the transformation scenario.