Hello everybody,
to all who are interested in this problem:
I found the solution myself (again…:-)).
By checking the html of the header, I found the correct class selector adressing the box of the site title, called “…-wrap”.
The code is now like this:
.ast-site-title-wrap {
margin-top: 20px;
}
This works on ALL pages and even no “!important” needed!
Regards, Tobias