Check out this drop-down menu created using HTML/CSS with a cool hover effect.
See it in action here: http://jsfiddle.net/rhxxyky8/10/
This menu utilizes lists structured like so:
<div id='dropdown'>
<ul>
<li class='detail'><a href='#'><span>Test 1</span></a>
<ul>
<li><input type="text" placeholder="Username"></input></li>
<li><input type="password" placeholder="Password"></input></li>
<li><input type="submit"></input><input type="reset"></input></li>
</ul>
</li>
</ul>
</div>
It can be challenging to replicate without step-by-step instructions or visuals. This method may not involve javascript, making it more efficient for some users.
Implementing login functionality without SQL or PHP presents a different set of challenges.