As teedoff pointed out, you would need an action page to process the input. You would need to be familiar with php and databases if you want to do something with the password.
Here's the actual html form for a login name, password. Teedoffs is missing a submit button as well as an identifier.
<form action="someActionPage.html" method="get">
<label for="user">User name:<input type="text" name="username" /></label>
<label for="password">Password:<input type="password" name="password"/></label>
<input type="submit" name="submit" value="Log in"/>