Blocks, one of the built-in features of Drupal 8 after installation, are boxes with content and are usually created by different means.

If you happen to use responsive image module in Drupal 8, and you want to use a custom breakpoint group in the responsive image style you’ve created, then you can do this by creating a custom breakpoint config file.

If you already have installed and set up your Drupal 8 site, the next important thing you need to do is to understand the administration toolbar.

Drupal is a free and open-source CMS that is used to build websites and web applications. Out of the box, Drupal has features like content management and authoring, user management, role and permission management, menu management, and more.