Reviewing the new info.yml file

The Info.yml file is required when creating any theme. It helps notify Drupal that a theme exists and provides information to the Appearance interface that a theme is available to install. We will be working with *.info.yml files when creating our first theme, so let's take a look at the makeup of a basic example.info.yml file:

name: Example
description: 'An Example theme.'
type: theme
package: Custom
base theme: classy
core: 8.x

libraries:
  - example/global-styling

regions:
  header: Header
  primary_menu: 'Primary menu'
  secondary_menu: 'Secondary menu'
  page_top: 'Page top'
  page_bottom: 'Page bottom'
  highlighted: Highlighted
  breadcrumb: Breadcrumb
  content: Content
  sidebar_first: 'Sidebar first'
  sidebar_second: 'Sidebar second'
  footer: 'Footer'

At first glance, the example.info.yml file is logical in structure and syntax. Starting from the top and moving our way down, the file is broken down by different sections of metadata containing general...