An Ultimate Guide To CSS Pseudo-Classes And Pseudo-Elements – Smashing Magazine

Hola a todos! (Hello, everyone!) In my early days of web design, I had to learn things the hard way: trial and error. There was no Smashing Magazine, Can I Use, CodePen or any of the other amazing tools at our disposal today.

https://www.smashingmagazine.com/2016/05/an-ultimate-guide-to-css-pseudo-classes-and-pseudo-elements/