This is done in the layout css. If you add padding to div.wTopic you will get the result you require. Just remember to substract any width you add in padding from the width of the div.wTopic or the container will become too large.
The project manager pod only shows the css files currently used by topics. Can you assign the css to a topic from the topic properties? There you should see all css files in your project directory.
Kind regards,
Willam
