WordPress.org has released pre-set block patterns that can easily be copy and pasted into any post or page. Below are examples:
Below you’ll see a selection of copy and pasted block patterns directly from the gallery:
Views of Mt. Fuji
An exhibition of early 20th century woodblock prints featuring the majesty of Mt. Fuji.
Even the bitterest fruit has sugar in it.
– Terry a O’Neal
The trees that are slow to grow bear the best fruit.