Create login form in Delphi using HTML

I want to load a simply login form but instead of delphi components I want to use HTML. So I need a developer to help me developer an application that will display an simply html with a form (username, pass and login button) that will be displayed in delphi app. The problem is not the html code but how to connect it with delphi. I need a way how delphi can understand and read html values like the username and password and how an event can be triggered when the html button "Login" will be clicked.