Bootstrap Visuals for Confluence is a plugin that provides page macros to display Bootstrap components on your page.
This Confluence Server plugin will not be further developed nor will there be a Data Center or Cloud version of it. However, the Server plugin works fine in a DC environment.
Support will be provided until the EOL of the server plugin on Atlassian's Marketplace.
This plugin provides page macros in Confluence that will put Bootstrap 4 and Bootstrap 5 visual objects to your page. They offer many options to configure them to your liking.