Form validation using variables and states

First Project, just for fun..

Graphics & credit from: https://www.sketchappsources.com/free-source/3362-nyan-cat-vector-sketch-freebie-resource.html. A small basic project animating this small design including its theme song. I do not own any of the following graphical and audio content. All rights are reserved to the appropriate entities.

An endangered species is a type of organism that is threatened by extinction. Species become endangered for two main reasons: loss of habitat and loss of genetic variation.

An example of a pricing screen imported from https://www.sketchappsources.com/free-source/3749-pages-ui-web-kit-update-2019-sketch-freebie-resource.html

simple date picker with full calendar for one month