Bottom Align Static Block with margin-bottom: 0 in HTML and CSS
css-sizing-4] Should aspect-ratio be used for abspos `top: 0; bottom: 0;`? · Issue #296 · mozilla/wg-decisions · GitHub
Elad Shechter on Twitter: "#CSS Positions got the 'inset' property, a shorthand to describe all the directions combined. Now has full support in all the updatable browsers. https://t.co/zk31WzdGwo" / Twitter
CSS position Property
Understanding Absolute position better - The freeCodeCamp Forum