I'm attempting to recreate the sidebar navigation like the one in the t3 site, seen here: http://t3-framework.org/documentation/customization.html
I added affix in Joomla but all that does it make it fixed on the page. It doesn't have any of the similar styling. Maybe I'm just confused and missing a step, how do I go about doing this exactly? Can I do so in the custom.css file or do I need to make modifications elsewhere?