Borders in bootstrap with examples - GeeksforGeeks
html - Bootstrap 4: Bottom border only on li elements - Stack Overflow
Fix Border styling with Bootstrap library hard overrides over borders [#3230802] | Drupal.org
table-bordered - Bootstrap CSS class
Bootstrap on Twitter: "v5.2.0 brings an updated border-radius to Bootstrap. Subtle and refreshing. 😌 Also includes new global CSS variables like `--bs- border-radius` and two new classes, `.rounded-4` and `.rounded-5`. Peep the PR
Bootstrap 4 inner dashed Border Button Example
Bootstrap border width Icon | Bootstrap Iconpack | Bootstrap Team