CSS

Cleanup CSS

• PurgeCSS - Remove unused CSS PurgeCSS
• leeoniyadropcss An exceptionally fast, thorough and tiny unused-CSS cleaner
• uncss Remove unused styles from CSS

specific stuff

• You can use text-wrap: balance; on icons

Text Alignment

• vertical-align

Animations

• view transitions, via Terence Eden
  • chrome dev demo
  • Old JQuery version