第七课
供进一步研究
- (2005) CSS究竟是如何工作的？; MDN网络文档
https://developer.mozilla.org/en-US/docs/Learn/CSS/First_steps/How_CSS_works
- (2018)学习HTML - 全套课程与代码样本 by freeCodeCamp.org; YouTube
https://www.youtube.com/watch?v=DPnqb74Smug
- (2019)标准; W3C
https://www.w3.org/standards/
- (2020)HTML和HTML5的区别 作者：Domantas G.; Hostinger Tutorials
https://www.hostinger.com/tutorials/difference-between-html-and-html5#:~:text=HTML5%20支持%20SVG%20(Scalable%20Vector,Markup%20Language)%2C%20或%20Silverlight.&text=HTML5%20是%20not%20based%20SGML。