More space

Add to your child css:

.site {
    width: 1200px; // current width is 1000px, so just as an example I put 1200px instead
}

Maybe i describe the problem in a bad way. I do not understand how could this solve it. On example i would like to make a bigger gab between Theme preview text/title of page and first circle row below the title.

So you would like to have a bigger gap between site title and the circles? Try:

.site-title {
    margin-bottom: 100px;
}

No it doesn’t do anything to appearance of the site. I’ve try a couple of things and nothing seems to change the gap :s

If this is what you would like to do – to have a bigger gap between site title and the circles, the above code should be able to do it. Did you put the code in the child css file?

Yes i have try’ed first with the child theme and than without, directly in style.css. Somehow it doesn’t do the trick

We’ll need to see the website in question to debug why that is.

This will be a bit difficult because i am using xampp