There are people who like the new WordPress block editor and many who prefer the classic version (before the days of Gutenberg).
Fifty50 is designed to be compatible for both, but there is one feature we added to this theme—the ability to disable block styles. Enabling this in the customizer will prevent block styles associated with this theme to not load.
However, this won’t entirely remove Gutenberg elements, so, if you really want it all gone, there is a plugin you can check out.
Disable Gutenberg
A plugin appropriately named “Disable Gutenberg”, by Jeff Starr, can be used. If you absolutely want all Gutenberg stuff gone (disabled), you can download this plugin from the WordPress website.
You will also want to install the Classic Editor plugin and the Classic Widgets plugin, as well.
Disable Gutenberg in Fifty50
The first preference is to disable Fifty50 styles that are associated with the block editor. Second, I would recommend using the plugins that I mentioned above. But for this theme, let’s disable the styles first.

- Go to Appearance > Customize > Other Options
- Look for the Disable Theme Gutenberg Elements setting, and then toggle it to blue for enabling.
- Click the Publish button.