JSFiddle - React, Tailwind, and code Playground

HTML

<div id='cssmenu'>
<ul>
   <li class='has-sub last'  id="iefix"><a rel=nofollow href='#'><span>Choose a model</span></a>
      <ul>
         <li  id="iefix"><a rel=nofollow href='#'><span>iPhone 3GS</span></a></li>
         <li  id="iefix"><a rel=nofollow href='#'><span>iPhone 4</span></a></li>
         <li  id="iefix"><a rel=nofollow href='#'><span>iPhone 4S</span></a></li>
         <li class='last'  id="iefix"><a rel=nofollow href='#'><span>iPhone 5</span></a></li>
      </ul>
   </li>
</ul>
</div>

CSS

#iefix {
position:relative;
z-index:1000;
}
#cssmenu ul,
#cssmenu li,
#cssmenu span,
#cssmenu a {
  margin: 0;
  padding: 0;
  position: relative;
}
#cssmenu:after,
#cssmenu ul:after {
  content: '';
  display: block;
  clear: both;
}
#cssmenu a {
  color: #ffffff;
  display: inline-block;
  font-family: 'Lucida Grande', 'Lucida Sans Unicode', Helvetica, Arial, Verdana, sans-serif;
  font-size: 12px;
  min-width: 35px;
  text-align: center;
  text-decoration: none;
  text-shadow: 0 -1px 0 #333333;
}
#cssmenu ul {
  list-style: none;
}
#cssmenu > ul > li {
  float: left;
}
#cssmenu > ul > li.active a {
  background: #646464 url(images/grad_dark.png) repeat-x left bottom;
  background: -moz-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #646464), color-stop(100%, #4a4a4a));
  background: -webkit-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -o-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -ms-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: linear-gradient(to bottom, #646464 0%, #4a4a4a 100%);
  filter: progid:dximagetransform.microsoft.gradient(startColorstr='#646464', endColorstr='#4a4a4a', GradientType=0);
  box-shadow: inset 0 0 10px #222222, inset 0 10px 10px #222222;
  -moz-box-shadow: inset 0 0 10px #222222, inset 0 10px 10px #222222;
  -webkit-box-shadow: inset 0 0 10px #222222, inset 0 10px 10px #222222;
  filter: none;
}
#cssmenu > ul > li.active a:hover {
  background: -moz-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #646464), color-stop(100%, #4a4a4a));
  background: -webkit-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -o-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: -ms-linear-gradient(top, #646464 0%, #4a4a4a 100%);
  background: linear-gradient(to bottom, #646464 0%, #4a4a4a 100%);
  filter:...