If I test with Firebug and place the code in css, all works as i want. But when the code is in those Custom style's custom.css files, something is broken. "Z-index" is overridden. Could that be VMuikit overriding my custom.css's? If you think yes, how do I fix it?
I hope it's understandable what I'm trying to do.
You can see, how it works on livingstudio.se/Aliv with the code in the Customized styles' css/custom.css. The navbar and logo is behind the widgets and all images and modules on product details pages.
But now,,, again,,, I changed the background color and same problem is back. Cleared the cache 5 times, still the same problem. What am I doing wrong.
You mean clearing the cache in Joomla backend, don't you?
'System' Clear cache'
Check all and then press 'delete'.
Very basic. Am I missing something?