Programming

Optimize browser rendering - Make the Web Faster

https://developers.google.com/speed/docs/best-practices/rendering

Once resources have been downloaded to the client, the browser still needs to load, interpret, and render HTML, CSS, and JavaScript code. By simply formatting your code and pages in ways that exploit the characteristics of current browsers, you can enhance performance on the client side.

https://developer.mozilla.org/en-US/docs/CSS/Writing_Efficient_CSS

Writing efficient CSS - CSS

This document provides guidelines for optimizing CSS code, and more specifically on how to write efficient selectors. The CSS specification doesn't specify how browsers must implement the style system, merely what it must do. Because of this, different style system engines may have completely different performance behaviors, and especially Gecko and WebKit which are open source, implement similar algorithms, with very similar strengths and weaknesses.

Efficiently Rendering CSS

Published by Chris Coyier I admittedly don't think about this idea very often... how efficient is the CSS that we write, in terms of how quickly the browser can render it? This is definitely something that browser vendors care about (the faster pages load the happier people are using their products).