blocks look not the same as in the demo

the blocks at the front look not the same as in the demo.
websiteportal24.de/
Only one block in one row and not 3 in one row.
What must be changed?

Your site is in offline mode, and we need to see it to check

sorry!
it is online now.

Hi,

is your home page of type "Featured Articles"?

Also see demo template masonery settings in attachment.

is your home page of type "Featured Articles"?
yes

Also see demo template masonery settings in attachment.
They are exact the same

I think it decides to show them like that because it calculates that that is best width for them. Maybe you can limit paragraph width:

.blog-featured .item p{
max-width:250px;
}

place that in template_css.css