https://tailwindcss.com/docs/outline-width
outline-width - Borders - Tailwind CSS
Utilities for controlling the width of an element's outline.
outline widthborderstailwindcss
https://www.w3schools.com/csS/css_outline_width.asp
CSS Outline Width
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
css outlinewidth