Submitted my little side project IronCalc. One thing it was difficult is that it wasn't clear what fields in the form had an error. So I didn't know what to mo

Submitted my little side project IronCalc. One thing it was difficult is that it wasn't clear what fields in the form had an error. So I didn't know what to modify to make the submit button clickable. It actually took me a bit to realize there might be something wrong in one of the inputs. Thanks!!!