Interesting. So is that typically the reason why pages with large number of elements are so slow? I had always assumed it was the HTML elements themselves, bu

Interesting. So is that typically the reason why pages with large number of elements are so slow? I had always assumed it was the HTML elements themselves, but could the bottleneck here sometimes be the CSS matching of those elements? Also, if I'm not mistaken, I believe that Servo (which the author of this post works on at Mozilla) is attempting some novel parallel CSS matching using Rust's support for parallelism/concurrency.