Stefan Judis on Twitter: "Today I learned there are implicitly and explicitly assigned grid line names. Implicit lines result from defined grid areas and explicit ones are defined via `grid-template-rows` and `grid- template-columns`.
Introduction to CSS Grid Layout Basics - part I - Slicejack
The CSS Grid Guide | EASEOUT
CSS grid-template-columns property | CSS Digger
Guía completa para aprender a utilizar CSS Grid Layout
Guía completa para aprender a utilizar CSS Grid Layout