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The CSS tutorial "CSS Video Tutorial-Jade Girl Heart Sutra Edition" is an original video tutorial on the PHP Chinese website. HTML and CSS are the core parts of WEB front-end development, so combined with the previous HTML course, we will get a better experience by studying CSS in this chapter. The course content is very rhythmically arranged, and the knowledge points are simple and clear, allowing you to study from beginning to end without any pressure. This chapter explains the basics of CSS in an easy and clear way, suitable for novices to watch and learn.