popup.html

<script src="jquery.js"></script>
<script src="popup.js"></script>
<script src="hover.js"></script>
<script src="sound.js"></script>
<script src="oauth2/oauth2.js"></script>
<script src="api.js"></script>
<link href="tooltip.css" rel="stylesheet" type="text/css">
<link href="jquery.qtip.min.css" rel="stylesheet" type="text/css">

<style>
  .advanced-settings, .normal-settings {
    display: none;
  }
  .advanced-settings.show, .normal-settings.show {
    display: block;
  }
</style>

<div class="normal-settings show" id="venmo_sign_in">
    <button type="button" >Sign into Venmo</button> 
</div>

<div>
  &nbsp;
</div>

<div class="normal-settings show" id="github_sign_in">
    <button type="button">Sign into Github</button> 
</div>