Bootstrap/site/content/docs/4.6/utilities/interactions.md

layout	title	description	group
docs	Interactions	Utility classes that change how users interact with the contents of a website.	utilities

Text selection

Change how the content is selected when the user interacts with it. Note that Internet Explorer and Legacy Edge have no support for the all value for user-select, and as such, .user-select-all is not supported by either browser.

{{< example >}}

This paragraph will be entirely selected when clicked by the user.

This paragraph has the default select behavior.

This paragraph will not be selectable when clicked by the user.

{{< /example >}}

Customize the available classes by changing the $user-selects Sass list in _variables.scss.