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

How to create simple triangle borders with CSS, by holly bourneville

Restricting a (pseudo) element to its parent's border-box

Diving into the ::before and ::after Pseudo-Elements / Coder's Block

GABuyer Europe Magazine Feb-12 by AvBuyer Ltd. - Issuu

css - remove borders around html input - Stack Overflow

How to Create and Style Borders in CSS

How to add border in CSS - javatpoint

My Colleagues Were Amazed By Borders, by bitbug

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

NES Style Pixel Borders In Pure CSS/SASS - pixel-borders