How to Construct an Element Border Without Using CSS's border, by bitbug

My Colleagues Were Amazed By Borders, by bitbug

Add Borders Around Your Elements Basic CSS via FreeCodeCamp Org

bitbug – Medium

How to Create a Body Border Around a Page's Content, Madrona Web

My Colleagues Were Amazed By Borders, by bitbug

html - CSS border - box without corners - Stack Overflow

border-block CSS-Tricks - CSS-Tricks

How to use CSS Border to cut box edge? – Innovations in IT Project Management

CSS: Adding Borders to Elements - iLoveCoding