About recall methond and programming

I have gained new knowledges about web perfomance optimization today and I'd like to recall them here. But first I want to talk about my relation to IT and to the Web especially. More than a year ago I have started to learn HTML and CSS, and about a few months ago I'v started to think about speed loading, site perfomance, and browser architecture. It's more interesting and better to know how does it works to then figure out how to optimize it.

So later I was taiking a test about our brains and how do we learn. If you interested in the course, it is called,  "Learning how to learn" by Barbara Oakley. And there was a method called "recall" that meeans you need to repeat the info you found out in order to enhance neural networks.

Today I found out about the order in wthich browser parses CSS rules -- the order is right to left. And based on this, we shoud to minimize CSS Specificity as if we have _.error img_ selector then the parser looks for all imgs first and then checks where is the img is that is child of .error's class.
Then I have read about " _media_ attribute" where we can defined a type of css like print or screen. In The article was talked about how the non-screen media types decrease loading speed and that we need to use inlined styles instead.