Thanks to you, I am studying well. I am sorry that I cannot give you all 5 stars. Everyone has different parts that they are satisfied with and different parts, so I was almost satisfied with everything, but the explanations were not smooth and there were some parts that were glossed over, so I personally felt some inconveniences in studying. Other than that, I was able to learn about vanilla JavaScript and libraries that I was new to, so it was good because it gave me a direction for my future studies. After learning that it is possible to create various effects with just CSS and JavaScript, such as 3D stereoscopic objects, I feel open not only to code but also to design thinking. I received a lot of help in many ways, and I think I will look for similar lectures in the future. Thank you and I am grateful.