Why is my header not transparent?

There are two ways to make your header transparent, this means that the content of the page will go underneath the header, and behave like some sort of a header background like in the following example http://demo.qodeinteractive.com/bridge/

This option can be set generally, inside the Qode Options/Header by setting the header background color to any, and afterwords setting the transparency to 0 http://screencast.com/t/wLcmijDB7iMq and also on each individual page, under the Qode Header section http://screencast.com/t/xyaByZ8P8