I need to make a portfolio, and since it's a shopping mall style, I didn't use Slick for the slides and tab menus that are often used, but instead used js, so it was a good class for organizing them even though it was a bit difficult! I didn't know about flex, but I can learn a little bit because it's used here. Since there's no unnecessary stuff, I think there are only parts that will be useful if I study it repeatedly, so I like it~ One thing that was a little disappointing was that there was no additional explanation about why it was done this way in some parts, so that was disappointing. However, it was helpful that you responded right away on the next day~ If you know a little bit of CSS and jQuery, I think you can do it. I recommend it~^^