Learning CSS and CSS Grid

This is an awesome presentation on how CSS Grid can be used to create a dynamic layout:
CSS Grid Changes EVERYTHING - Amazing Presentation - Morten Rand-Hendriksen | July 2017
CSS Grid Layout - Rachel Andrew | February 2017

More on CSS Grid:
Grid by Example
CSS Grid
WordPress Theme Using CSS Grid Layouts
Building Production-Ready CSS Grid Layout Today

CSS examples:
Falling Cubes
Working Clock