You can design a custom 404 page using the Custom Layout module available with Astra Pro. Please refer document, to begin with, Custom Layout module.
This is a premium feature available with Astra Pro Addon plugin. To use these pro features, you need to have the Astra theme along with the Astra Pro Addon installed on your website.
Selecting a 404 page layout will replace the current 404 page content with custom layout content.
You can design 404 page with any page builder.
Options available for 404 page layout-
- Disable Primary Header
- Disable Footer Bar
You can decide a user role for which the custom 404 page layout should be visible. You can add more than one user role with the Add User Role button.