Age calculator app made with vanilla javascript/CSS

I started focusing on Angular 3 months ago and since then I had not made any "vanilla" javascript projects. So this was tricky for me but it was also wonderful getting back into the javascript. I even did my first tests ever using the Jest framework. I really enjoyed doing this and will probably do 2 "vanilla" projects for every 4 angular projects I do because its so important to me that I maintain a well rounded level of experience. It was pretty interesting seeing how long my code was compared to how long it would have been if I used a framework.