1<button type="button" class="btn btn-primary">Blue</button>
2<button type="button" class="btn btn-secondary">Grey</button>
3<button type="button" class="btn btn-success">Green</button>
4<button type="button" class="btn btn-danger">Red</button>
5<button type="button" class="btn btn-warning">Yellow</button>
6<button type="button" class="btn btn-info">Ligth blue</button>
7<button type="button" class="btn btn-light">White</button>
8<button type="button" class="btn btn-dark">Black</button>
9
10<button type="button" class="btn btn-link">White with blue text</button>
1<!-- Bootstrap v5.0 -->
2
3<button type="button" class="btn btn-primary">Primary</button>
4<button type="button" class="btn btn-secondary">Secondary</button>
5<button type="button" class="btn btn-success">Success</button>
6<button type="button" class="btn btn-danger">Danger</button>
7<button type="button" class="btn btn-warning">Warning</button>
8<button type="button" class="btn btn-info">Info</button>
9<button type="button" class="btn btn-light">Light</button>
10<button type="button" class="btn btn-dark">Dark</button>
11
12<button type="button" class="btn btn-link">Link</button>