Masonry Grid + your custom block inside. How to complete this?

Question

css

Good time.
How to complete this?
When loading the page in the center of the logo, and around the blocks (posts from WP).
The page may scroll down.
It still and should be responsive/adaptable for different screens.
Such an arrangement of blocks can be made with the same Masonry plugin, but to put your block inside, clearly in the center, the brain is already boiling))