<div class="find-content">
  <h3>Find Content</h3>
  <input type="search" placeholder="Search" />
  <span>or</span>
  <div class="dropdown">
    <a class="dropdown-toggle" data-toggle="dropdown" href="#">Choose a Subject</a>
    <ul class="dropdown-menu" role="menu">
      <li><a href="#">Astronomy</a></li>
      <li><a href="#">Biology</a></li>
      <li><a href="#">Business</a></li>
      <li><a href="#">Chemistry</a></li>
      <li><a href="#">Computer Science</a></li>
      <li><a href="#">Economics</a></li>
      <li><a href="#">English</a></li>
      <li><a href="#">Geography</a></li>
      <li><a href="#">History</a></li>
      <li><a href="#">Law</a></li>
      <li><a href="#">Mathematics</a></li>
      <li><a href="#">Philosophy</a></li>
      <li><a href="#">Physics</a></li>
      <li><a href="#">Political Science</a></li>
      <li><a href="#">Psychology</a></li>
      <li><a href="#">Sociology</a></li>
    </ul>
  </div>
</div>

<div class="find-content">
  <h3>Find Content</h3>
  <input type="search" placeholder="Search" />
  <span>or</span>
  <div class="dropdown">
    <a class="dropdown-toggle" data-toggle="dropdown" href="#">Choose a Subject</a>
    <ul class="dropdown-menu" role="menu">
      <li role="menuitem"><a href="#">Astronomy</a></li>
      <li role="menuitem"><a href="#">Biology</a></li>
      <li role="menuitem"><a href="#">Business</a></li>
      <li role="menuitem"><a href="#">Chemistry</a></li>
      <li role="menuitem"><a href="#">Computer Science</a></li>
      <li role="menuitem"><a href="#">Economics</a></li>
      <li role="menuitem"><a href="#">English</a></li>
      <li role="menuitem"><a href="#">Geography</a></li>
      <li role="menuitem"><a href="#">History</a></li>
      <li role="menuitem"><a href="#">Law</a></li>
      <li role="menuitem"><a href="#">Mathematics</a></li>
      <li role="menuitem"><a href="#">Philosophy</a></li>
      <li role="menuitem"><a href="#">Physics</a></li>
      <li role="menuitem"><a href="#">Political Science</a></li>
      <li role="menuitem"><a href="#">Psychology</a></li>
      <li role="menuitem"><a href="#">Sociology</a></li>
    </ul>
  </div>
</div>

Add role to menu items
Add role to menu items
