Use border utilities to add or remove an element's borders.
Use of any component to give the different styles of border using border-*radius/border-color/border-width class.
Using any component to add background color using .bg-* & .alert-light-* class.
Use the .b-*/.b-t-*/.b-b-*/.b-l-*/.b-r-* class for borders.
Set different type of height & width using .img-* & .img-h-* class.
To set different font-style use .f-s-*[normal/italic/oblique/initial/inherit] class.
This is a .f-s-normal font-style
This is a .f-s-italic font-style
This is a .f-s-oblique font-style
This is a .f-s-inherit font-style
Using .f-w-*[100/300/400/600/700/900] class set different font-weight.
Give the text color using .font-* class.
Use .f-*[14/16/18..etc] class to add font-sizes.