carsten888 wrote: ...no tabs, but each div under each other...
I made a similar question some time ago. Unfortunately, the configuration does not have any influence on the edit display. Nor the tab styles, which is a real drawback! And... there is no pure CSS solution for this. You can modify the final output, so you get rid of the tabs... BUT
If you examine the code, you will see that the titles are in a "stacking order". And also the "tab" containers come in their own stack! So, there is no connection between the title and the actual content!
Example:
Title1
Title2
Title3
...
TabContent1
TabContent2
TabContent3
...
The only solutions would be a re-ordering of the elements with jQuery...
(or modify the core files)