Jen describes the overall big picture of CSS Grid and what all these terms mean. How it's different than float-based frameworks and how we are going to apply Grid to specific containers on the page — while still using other layout methods on other containers of content.

Links:
• The official Grid level 1 specification: www.w3.org/TR/css-grid-1
• Draft of the Grid level 2 specification: drafts.csswg.org/css-grid-2
• For more on Implicit vs Explicit, watch the beginning of this video:    • Incredibly Easy Layouts with CSS Grid