20th Challenge - Multi-step form

(This was written using a translator. The grammar can be very awkward!) Long time no see. And Happy New Year!

It's already the 20th challenge, and this challenge is much later than usual. With the end of the year approaching and the new year approaching, my mind has become lazy.

Still, in the new year, I made up my mind again and coded hard to study steadily.

This time, I worked with pure JavaScript, not React, which I have been using for a while. In addition, I loaded and used Tailwind CSS through CDN.

While working, it was fun, but on the other hand, 'Are my coding skills really good?' I often think about it. I guess I lost a lot of confidence.

I want to be good at coding. I want to do well somehow and get a job as a new web front-end developer!

If you don't mind, please leave code reviews as Github Issues or comments! The code reviews and feedback you left are the driving force for me to study further!

thank you!

(! The Github README is in Korean. Please refer to it.)