This module focuses on the concepts and frameworks of computer thinking, as well as how to use HTML and CSS to construct a web page. HTML is the vehicle for the content of a web page. The content is the information that the web page creator puts on the page that the user wants to view and can contain text, images, videos, etc. CSS styles, however, are the presentation. It's like the outer shell of the web page. For example, header fonts, color changes, or adding background images or borders to headers. HTML and CSS are complementary, and only when they are combined can a web page be perfect. most of the tags in HTML come in pairs, and I sometimes forget the closing tag, which causes the program to not work well. CSS controls the display properties of each flag in HTML uniformly, and I just When I first started to learn, I always thought that the two existed independently, and I always wrote one before the other, which led to some distortion and distortion of the web page. Through the learning of these two, I can master the writing of some static web pages, however, now most of the front-end web pages are very rich in content and style, and later have to learn how to make dynamic web pages and more complex web pages, which need to use a certain JavaScript language, so the learning of HTML and CSS lay a certain foundation for the future production and learning of dynamic web pages. At the same time, the front-end learning can also be combined with the back-end development, making their computer technology more proficient. In another aspect, this course also allows me to master certain skills and thinking to better analyze problems, in the rest of the course, if you encounter relatively difficult projects, you can use computer thinking to do some splitting, subdividing the complex course into some simple small parts, and at the same time, analogy and analysis of the problem, compared with the previous learning and projects done, from which to find the similarities and differences Finally, you can also remove the redundancy, some of the projects do not need to spend the trade-off, after all, human energy is limited, time is precious, to spend on the value of the place, these are my reflections and analysis of how it will affect the rest of your course of study