What are the performance benefits of using Sass/Less rather than ‘normal’ CSS? Martin Oxby, Inverness, UK HR: A preprocessor is to performance what a knife is to a meal – a good knife might make you work faster and more effectively, but it won’t necessarily make your food taste any better. You could use Sass to make nice DRY code that promotes reuse, lowers filesize, and helps performance, or you could use Sass to inadvertently generate a million lines of unnecessary CSS that completely destroy performance. Remember: garbage in, garbage out.
The basics This video gives a concise overview of the Physical Web