Fix some html / css issues of a website

Hey,

I need some simple fixes of a html website. I am sure it is less than a few minutes for each problem if you know what you are doing.

- Bigger Plus Sign with the accordions and a description where I can find it to change it. On the frontpage
- dots right underneath the picture on the frontpage
- responsive google maps page on the contact (Kontakt) page.
- accordion design like on first page and all of them should be collapsed and not open on the Kosten Page
- add css style for the ul and tell me where and how to cahnge it

the url is : www.kanzlei-gaul.de

Thank you

Christoph