CSS can be understood as layout markup language. There is a website called Learn CSS Layout abroad. Each usage of css is displayed in css on the current page, with very detailed explanations.
Different from other tutorials on the Internet, the content in Learn CSS Layout looks very relaxed. I think it may be due to the following reasons:
1. Very detailed explanation, and It is illustrated with pictures and texts, and equipped with codes.
2. The casual style is like the feeling of a primary school student learning new things. It does not feel like learning a technology at all. UI front-end framework carefully developed for 5 years!
3. The layout of the website is very simple, with only one page. The advantage of this is that you will not be distracted by other links. Many times when we read an article on the Internet, we are attracted by other links. It turns out that the article pointed to by the link only has an attractive title. At this time, you don’t know where the article you just read went.
It is worth mentioning that although this website is for beginners, it is also worth a look for those who are experienced.
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