WordPress 404 page customizer.
Custom 404 allow you to customize the 404 page style and content. It allows you to style your current theme 404 page or create a new one.
You can insert Widgets, Styles and Content. Custom 404 has minimal HTML. Everything is done with live preview.
You can customize an 404 page for each of your themes, simply as customize your theme.
Custom 404 uses Kirki Toolkit plugin to allow better customization. You will be prompted to install it when you use the plugin for the first time.
The plugin is developed on GitHub. Pull requests are welcome. Check the Develop Branch for latest version.