This post is a placeholder for some resources I have been studying as keeping everything alive in my browser tabs is becoming burdensome and has always been fragile in the first place.
CSS Grid
Jen Simmons - Layout land
Rachael Andrews
Mozilla - Firefox devtools - INTRODUCTION TO CSS GRID LAYOUT (I haven't read that one yet.)
CSS-Tricks
Stephanie Eckles - Modern CSS
Sticky Headers and Footers
Flexbox
I already know this, but as a review:
- CSS Tricks - A Complete Guide to Flexbox
Layout
- Every Layout - Heydon - Premium resource, but intriguing.