Age calculator website using HTML5, CSS3 and JS

I thought this project was very easy, i've done some projects that needed a lot more tools, a lot of effort and concentration, and a certain amount of planning time. But, after many trials and many errors, i realized that my own knowledge was much less developed than i thought, however, now i am motivated to go back to study even more, exploring as much as possible of what i still don't know. In the future, i will do this project again in my own way.