Good day my friend and future employer.
I'm disposed to do this work, i know PHP with framework how codeigniter and laravel.
I looking the webpage and suppose you need implement AJAX validation, as this validation is light and fast, and don't have high impact in the design of the web page and work ever on the client page(frontend).
the validations goes in the bottom of the textbox in the moment that the error presents, and disappear when if correct.
i invite you to contact me is the offer is great for you, my work is guaranteed.