• A global class is defined as a class that is intended for use across the entire project.
• A global class is a class that is universal to the build.
• It can be applied to any element in the build.
• "Global" means everywhere and anywhere in the project.
• Both utility classes and custom classes can be global classes.
• Commonly used for margin, padding, sizes, and colors.
• Any type of class that intends to have full-site global management of styles.
• One style change to the class will update the class globally across the website.

Learn more on the Classes strategy 1, Classes strategy 2.