Add a dropdown list to any button. Make sure that the data-activates attribute matches the id in the <ul> tag.

Basic

You can add a divider with the <li class="divider"></li> tag.

Press Me!
<!-- Dropdown Trigger -->
<a class='dropdown-button btn' href='#' data-activates='dropdown1'>Drop Me!</a>

<!-- Dropdown Structure -->
<ul id='dropdown1' class='dropdown-content'>
  <li><a href="#!">one</a></li>
  <li><a href="#!">two</a></li>
  <li class="divider"></li>
  <li><a href="#!">three</a></li>
</ul>

Button Group Dropdown

You can use button groups for drop-down.

<!-- Dropdown Trigger -->
<div class="div btn-group">
  <a href="#!" class="waves-effect waves-light btn">Just Button</a>
  <a href="#!" class="waves-effect waves-light btn dropdown-button" data-activates='dropdown2'><span class="mdi-navigation-expand-more"></span></a>
</div>

<!-- Dropdown Structure -->
<ul id='dropdown2' class='dropdown-content'>
  <li><a href="#!">one</a></li>
  <li><a href="#!">two</a></li>
  <li class="divider"></li>
  <li><a href="#!">three</a></li>
</ul>

Options

The default behavior of dropdown is to activate on click. To have it activate on a hover, you can pass that as an option in HTML as shown below.

Hover Me!
<a class='dropdown-button btn' data-constrainwidth="false" data-hover="true" data-induration="500" data-outduration="300" href='#' data-activates='dropdown1'>Drop Me!</a>
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Monday, Feb 23, 8:23 pm
Hi, Felicia.
How are you?
John Doe Hi! I am good!
Glad to see you :)
This long text is intended to show how the chat will display it.
John Doe Also, we will send the longest word to show how it will fit in the chat window: Pneumonoultramicroscopicsilicovolcanoconiosis
Friday, Mar 10, 5:07 pm
Hi again!
John Doe Hi! Glad to see you.
I want to add you in my Facebook.
Can you give me your page?
John Doe I do not use Facebook. But you can follow me in Twitter.
It's good idea!
John Doe You can find me here - https://twitter.com/nkdevv