What Is a Breakpoint YAML File? for Drupal 8, 9, and 10

Drupal's Breakpoint module defines a "breakpoint" plugin type that modules or themes can implement via a breakpoints configuration file. So, in order to make their breakpoints discoverable, themes and modules define their breakpoints in a THEME-OR-MODULE.breakpoints.yml file located in the root of their directory.

In this tutorial, you'll learn about the structure of a breakpoints configuration file and why you would want to use one. We’ll cover the kinds of metadata you can include in a breakpoint file, including key, label, mediaQuery, weight, multipliers, and breakpoint group. Throughout, we'll look at some examples of breakpoint configuration files available in Drupal themes and modules.

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