@tpartner: Ok, that makes sense. The thing is that I received a template from a collegue, and now I am working and modifying that one. Therefore I do not want to use the default template, as I would then need to start from scratch. I understand that it is necessary to have some basic knowledge about html&css and to take some time to learn how to use limesurvey properly. I do have some very basic knowledge about html&css, but I have to work under serious time constraints and therefore am happy whenever I can take a "shortcut". You mentioned "html" elements, where can I find those?
@Mazi: Is there another option to implement a test-survey than to activate the aurvey?
Thanks again to both of you for your help!