One of their senior engineers gave a good talk on this recently: https://speakerdeck.com/patrickhamann/css-and-the-critical-path https://speakerdeck.com/patrick

One of their senior engineers gave a good talk on this recently: https://speakerdeck.com/patrickhamann/css-and-the-critical-path https://speakerdeck.com/patrickhamann/css-and-the-critical-p...