Template Editing:

I m working with Template(Admin-Side) Integration with Asp.net. should i use masterpage?

How to convert HtmlPage to .aspxpage??

Html Page and LogIn Page:

Html Code:

login.html

Code:
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible"
...