Button and input field appearance in Wappler and Safari

I have the problem, that there is a different appearance of objects in the Wappler Editor and the Web-brousers.
See pic.
There are e.g. borders around

Screenshot 2020-01-18 07.49.331414×484 58.3 KB

Screenshot 2020-01-18 07.50.34558×996 89.8 KB