Browser error handling:

[OrianP]

• [x] 'required' keyword on all inputs
• [x] validate user input with correct input types and with attributes such as min-length
• [x] add a password requirements div with aria-label described-by on the correlating input (i.e password must be at least 8 characters long etc...)
• [x] Display built in errors for invalid user inputs
• [x] stylistic indicators for errors