Borders
Use border utilities to quickly style the border and border-radius of an element. Great for images, buttons, or any other element.
Additive borders
.border
.border-top
.border-end
.border-bottom
.border-start
Subtractive borders
.border-0
.border-top-0
.border-end-0
.border-bottom-0
.border-start-0
Border color
.border-primary
.border-success
.border-danger
.border-warning
.border-dark
Border width
.border-1
.border-2
.border-3
.border-4
.border-5
Border radius
.rounded
.rounded-1
.rounded-2
.rounded-3
.rounded-4
.rounded-5
.rounded-pill
Rounded corners can also be scoped per side: .rounded-top, .rounded-end, .rounded-bottom, .rounded-start, plus the multi-corner .rounded-top-start etc.