CSS, HTML and Javascript

This was, so far, one of the most challenging projects I've made. But I am really glad I managed to finish it! That's the best sensation! The most difficult part of this project was to create every single validation for the dates. For example, if the user types a date that hasn't come yet, or a day from a month that doesn't have those many days. It was tricky.

For those who get to see my Javascript code lines, I might be wrong, but there could be a better and maybe easier way to get all those validations and conditions done. So, please, feel free to send me some feedback and tips on how to improve it! I'll be more than happy to hear you!