Koa11y #Project: Easily check for website accessibility issues.
2017-Web Content Accessibility Guidelines—for People Who Haven't Read Them: In a single article—what gifts the Web Content Accessibility Guidelines 2.0 editors have bestowed upon us.
Sizzy #Project# ：A tool for developing responsive websites crazy-fast. Sizzy 是辅助开发者预览网页在不同屏幕分辨率下显示效果的工具，它能够在同一页上列举出目标网页在多个设备上的显示效果，从而加速响应式开发的速度。
React SizeME: Make your React Components aware of their width, height and position.
Device.js #Project#: 面向不同的设备选用不同的布局代码
The pro's guide to responsive web design: Advanced techniques from top web designers to build better sites for any device.
Respond.js #Project#: 针对 IE6-8 的媒介查询
2017-Common Responsive Layouts with CSS Grid (and some without!): Example code for you to try out, change and make your own.