Check the class Header in the class editor, it has all the code you need to change. Note any changes in this class will be applied to all pages since it is used by default in all pages. The padding you can control in the CSS code in the class like the css : .PageOutline ... .PageBody ...
If you want the background for the homepage only, copy the header class to the frontpage tempate and remove the --Header-- class from it, then modify as you like and changes will be to the template only. thanks
|