Created by: ysds
Closes #26656 (closed)
The sticky footer examples are using specific the height of the footer (60px). I've rewritten it to flexbox based for remove the specific values. The benefitis that the CSS will be more general and more responsive design.
Demo: https://codepen.io/anon/pen/WyxRKp
..I'm worried about using main element selector. Please review it too :)