It was a lecture I was looking forward to, and my curiosity about 3D pages was somewhat resolved, and I will study more and make a great page. I listened to the lecture as a concept of reviewing the parts I studied related to js, and I studied the parts I didn't know repeatedly. Of course, it is a lecture that has passed some time ago and there are things that have been improved, but there were some things that I regretted watching only this lecture. 1. Sharing the completed source code Of course, the lecturer had intentions, but if you share the code that is too complete, you might end up only listening to the lecture. Of course, that's why I created a separate practice.html file for each file and watched the lecture and implemented it on my own. However, I thought it would have been better if the lecturer had implemented only the basics, such as basic characters or basic css, according to the instructor's intentions, and implemented the code so that the listeners could implement other js or css. 2. Screen size when explaining on paper Of course, you can see it if you look at it, but is it more accurate and refreshing? In order to see it, I think it would have been better if the instructor had made the screen size larger, at least to the extent of the last class greeting! The lecture was really good. I listened to it because I thought I lacked basics before listening to the Apple lecture, and the reason I first became interested in the front end was because I wanted to implement interactive elements, so I became interested again and learned which parts I need to study more. It was really helpful, but I wrote a few words because I thought this kind of feedback would be more helpful when the instructor organizes the lecture. Thank you!