CSS is often overlooked when it comes to performance optimizations, however when your site starts receiving a high amount of traffic, or you build a web application to handle high load scenarios, it may be useful to dig deeper and get the most out of every piece of your setup.
![CSS Performance Tuning](https://cdn-ak-scissors.b.st-hatena.com/image/square/9ce796f3b7f5e36e58e713d7d07aee047815f315/height=288;version=1;width=512/https%3A%2F%2Ffiles.speakerdeck.com%2Fpresentations%2F7acb2578373d4414a70bf41833f14acb%2Fslide_0.jpg%3F4746884)