##This form was based on the following links:
https://www.devmedia.com.br/php-forms-manipulando-dados-de-formularios/29392
https://www.w3.org/Style/Examples/007/fonts.pt_BR.html
https://developer.mozilla.org/pt-BR/docs/Web/HTML/Element/table
https://pt.stackoverflow.com/questions/159497/como-tornar-obrigat%C3%B3rio-um-campo-html