CSS Paint API Polyfill
This is a JavaScript Polyfill to implement the CSS Paint API on web browsers that do not support it.
JavaScript & CSS Polyfill
CSS Hyphenation Polyfill – Hyphenopoly.js
Hyphenopoly.js is a JavaScript polyfill for those browsers/user agents that don’t support the CSS hyphenation.
HTML5 Dialog Element Polyfill
A JavaScript polyfill for the HTML5 dialog element to create interactive dialog UI components on all major browsers.