Outline

Utilities for controlling the width and color of an element's outline.

Class	CSS Output
`outline`	`outline-style: var(--tw-outline-style, solid); outline-width: 1px;`
`outline-2`	`outline-style: var(--tw-outline-style, solid); outline-width: 2px;`
`outline-4`	`outline-style: var(--tw-outline-style, solid); outline-width: 4px;`
`outline-red-500`	`outline-color: var(--color-red-500);`
`outline-blue-600`	`outline-color: var(--color-blue-600);`
`outline-red-500/50`	`outline-color: color-mix(in oklab, var(--color-red-500) 50%, transparent);`
`outline-[3px]`	`outline-style: var(--tw-outline-style, solid); outline-width: 3px;`

Reference