Invoice created using React, Redux and Formik

This Project really broaden my thinking faculty. I know how many times I had to stop and think of the next steps I needed to take to finish the Project. Anyways, The only Problem I Have is styling default input tags like the checkbox, DateTimePicker and of Cause the Dropdown. Am sorry I couldn't make a custom dropdown and the likes. I'll recommend an article or probably a video tutorial of how to create custom Html Inputs. I haven't added any animations yet, Everything your seeing in the page is basically Transitions. I'll definitely add Animations in the nearest Future.

Eeeewwww, When I submitted, I noticed so many Html Error and Accessibility reports so bad. so should I just be using the div tag as my container and just forgets all this sections and article because am afraid I might not use the header tag atall inside the article Tag