bootstrap 4 modal popup cheatsheet code example

Example 1: bootstrap cheat sheet

Two very good bootstrap Cheat Sheets are:
https://getbootstrap.com/docs/5.0/examples/cheatsheet/
https://websitesetup.org/wp-content/uploads/2020/03/Bootstrap-Cheat-Sheet-websitesetup.org_.pdf

Example 2: bootstrap 4 classes list with description pdf

<span class="badge badge-pill badge-primary">Primary</span>
<span class="badge badge-pill badge-secondary">Secondary</span>
<span class="badge badge-pill badge-success">Success</span>
<span class="badge badge-pill badge-danger">Danger</span>
<span class="badge badge-pill badge-warning">Warning</span>
<span class="badge badge-pill badge-info">Info</span>
<span class="badge badge-pill badge-light">Light</span>
<span class="badge badge-pill badge-dark">Dark</span>