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  • News

    • Firefox and IE add support for the Prefer:Safe HTTP header, ’s post
      • When parental controls are enabled in the OS (Windows, Mac), the user agent proactively advertises the Prefer:Safe HTTP header to all websites. “We hope to see sites voluntarily use the header over time. Microsoft Bing supports the header as a way to turn on the Safe Search feature for Bing.”
    • Firefox 31, release notes + MDN page (for developers)
      • New Web Platform features: (1) CSS custom properties (new --* syntax). (2) ES6 Array .fill() method (demo) an Object.setPrototypeOf(). (3) CSS.escape() (demo). (4) navigator.sendBeacon() (MDN). (5) WebVTT (’s post w/ details).
  • Posts

    • Responsive images cookbook (15 usage scenarios w/ code examples), ’s post
    • Multi-column paged layouts with CSS Figures (spec), Håkon Wium Lie’s post
      • Explains the concept of paged presentation (as opposed to scrolled presentation). Figures can be floated in all four directions, span multiple columns and be deferred for later presentation (in a subsequent column or page).
  • Content

    • Chrome DevTools tip: Save objects to clipboard with copy($_), ’s gif
  • Demos

  • Tools

    • WebGLWorker, a polyfill for running WebGL API in workers (off the main thread), ’s post

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