via wptavern.com => original post link
Gutenberg 14.4 was released today with long-awaited support for distraction-free editing, to the delight of content editors around the world. It hides all non-essential UI and clears the canvas for a focus on text-based content creation.
The mode can be toggled on in the options menu in the top toolbar. Distraction-free mode hides the top toolbar, any open sidebars, along with the insertion point indicator and the block toolbar.
source: Gutenberg 14.4 release post