** resources + researches for this mini project **
/** Researching about HTML Forms **/
https://www.w3schools.com/html/html_forms.asp
/** Researching about the Form Input element **/
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input
/** CSS :valid pseudo-class **/
https://developer.mozilla.org/en-US/docs/Web/CSS/:valid
/** Client-side Form validation **/
https://developer.mozilla.org/en-US/docs/Learn/Forms/Form_validation
/** Constraint validation **/
https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation
/** RegEx Background Info - The pattern attribute **/
https://html.com/attributes/input-pattern/
/** RegEx Playground Tool (Password Pattern) **/
https://regexr.com/3bfsi
/** Different Approaches to Form Validation **/
https://css-tricks.com/form-validation-part-1-constraint-validation-html/
/** HTMLFormElement: submit event **/
https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/submit_event
/** preventDefault() Event Method **/
https://www.w3schools.com/jsref/event_preventdefault.asp