Bootstrap Dropdown

by Osama Qassar

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
        <div class="container">
          <div class="dropdown">
            <button class="btn btn-success dropdown-toggle" type="button" data-toggle="dropdown">Example
            <span class="caret"></span></button>
            <ul class="dropdown-menu fade">
                <li class="dropdown-header"><b>Example</b></li>
                <li><a href="#">Example 1</a></li>
                <li><a href="#">Example 2</a></li>
                <li><a href="#">Example 3</a></li>
                <li><a href="#">Example 4</a></li>
                <li><a href="#">Example 5</a></li>
            </ul>
          </div>
        </div>

CSS

.dropdown .dropdown-menu{
    opacity:0;
    -webkit-transition: all 200ms ease-in;
    -moz-transition: all 200ms ease-in;
    -ms-transition: all 200ms ease-in;
    -o-transition: all 200ms ease-in;
    transition: all 200ms ease-in;
 }
 .dropdown .dropdown-menu {
    display: block;
    opacity: 1;
 }