css coding for gallery assist - need help

Hello,
Id like to have my galleries embedded in my node like it is in

http://simple.puntolatinoclub.de/content/discos-ii

So the text is on the left and around the Gallery. Unfortunately there is no description how to do that.
I tried nearly all settings but i cant find how it works, do i have to change the CSS? Can somebody give me a hint where i have to change something. I also dont really understand the difference between site-container and teaser-container in the layout settings. i use the marinelli/giordani theme
Please help me! Thanks!