Space between posts

Add this to your CSS file:

.post {
padding-bottom: 20px;
}

If you want more space, increase that number as needed.

Thank you very much for the fast answer. How do I change the space between the post title and post text?

https://www.jayem.se

.storytitle {
padding-bottom: 20px;
}

No, this did not help me at all.
I want to have a smaller space between my post title and my post text.

If you look at https://www.jayem.se my first post showing up at the moment is:

“diet photo”
and then there is a transparent space between the text:
“New week has come, time for a new…” which is the post text. I want this transparent space to be smaller.

Looks like you have a <br/> tag between the title and the content. remove that and adjust the space in between with padding

Ok. Where do I find the <br/> tag?
In what document? CSS file? php file?