Colorful borders

Use color profiles to the following border colors ,border-primary, .border-secondary, .border-success, .border-danger, .border-warning, .border-info, .border-light, .border-dark, .border-white, .border-transparent, .border-faded

Add Borders

Add border using .border, .border-top, .border-end, .border-end, .border-bottom, .border-start

Border Opacity

Add border using .border-opacity-75, .border-opacity-50, .border-opacity-25, .border-opacity-10.

Border Thickness

Border thickness using border-1, border-2, border-3, border-4, border-5.

Rounded example

Round edges or control each corner using .rounded, rounded-top, rounded-end, rounded-bottom, rounded-start, rounded-circle, rounded-0, .rounded-plus, .rounded-{sm,lg}, .rounded-pill, border-{top,bottom}-{left,right}-radius-0
Control rounded depth using rounded-1, rounded-2, rounded-3, rounded-4, rounded-5
Mix and match rounded corners using rounded-bottom-1, rounded-start-2, rounded-end-circle, rounded-start-pill, rounded-5 rounded-top-0

Remove borders

Subtract borders with border-0, border-top-0, border-end-0, border-bottom-0, border-start-0, .border-transparent