HTML
<div id='cssmenu'>
<ul>
   <li class='active'><a href='ganti link ini'><span>Home</span></a></li>
   <li class='has-sub'><a href='ganti link ini'><span>Products</span></a>
      <ul>
         <li class='has-sub'><a href='ganti link ini'><span>Product 1</span></a>
            <ul>
               <li><a href='ganti link ini'><span>Sub Item</span></a></li>
               <li class='last'><a href='ganti link ini'><span>Sub Item</span></a></li>
            </ul>
         </li>
         <li class='has-sub'><a href='ganti link ini'><span>Product 2</span></a>
            <ul>
               <li><a href='ganti link ini'><span>Sub Item</span></a></li>
               <li class='last'><a href='ganti link ini'><span>Sub Item</span></a></li>
            </ul>
         </li>
      </ul>
   </li>
   <li><a href='ganti link ini'><span>About</span></a></li>
   <li class='last'><a href='ganti link ini'><span>Contact</span></a></li>
</ul>
</div>

CSS

@charset 'UTF-8';
/* Starter CSS for Flyout Menu */

#cssmenu {
  padding: 0;
  margin: 0;
  border: 0;
}
#cssmenu ul,
#cssmenu ul li,
#cssmenu ul ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
#cssmenu ul {
  position: relative;
  z-index: 597;
  float: left;
}
#cssmenu ul li {
  float: left;
  min-height: 1px;
  line-height: 1em;
  vertical-align: middle;
}
#cssmenu ul li.hover,
#cssmenu ul li:hover {
  position: relative;
  z-index: 599;
  cursor: default;
}
#cssmenu ul ul {
  visibility: hidden;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 598;
  width: 100%;
}
#cssmenu ul ul li {
  float: none;
}
#cssmenu ul ul ul {
  top: 1px;
  left: 99%;
}
#cssmenu ul li:hover > ul {
  visibility: visible;
}
#cssmenu ul ul {
  top: 1px;
  left: 99%;
}
#cssmenu ul li {
  float: none;
}
#cssmenu ul {
  font-weight: bold;
}
#cssmenu ul ul {
  margin-top: 1px;
}
#cssmenu ul ul li {
  font-weight: normal;
}
/* Custom CSS Styles */

#cssmenu {
  border-radius: 5px 0 0 5px;
  -moz-border-radius: 5px 0 0 5px;
  -webkit-border-radius: 5px 0 0 5px;
  background-color: #141414;
  background-image: url(data:image/png;base64,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);
  background-repeat: repeat-x;
  width: 200px;
}
#cssmenu:after {
  content: '';
  display: block;
  clear: both;
}
#cssmenu a {
  background-color: #141414;
  background-image: url(data:image/png;base64,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);
  background-repeat: repeat-x;
  color: white;
  display: block;
  font-family: Helvetica, Arial, Verdana, sans-serif;
  font-size: 12px;
  font-weight: normal;
  line-height: 180%;
  padding: 13px 20px;
  text-decoration: none;
}
#cssmenu ul {
  border-right: 2px solid #0fa1e0;
  list-style: none;
  width: 200px;
}
#cssmenu > ul {
  float: left;
}
#cssmenu > ul > li:hover:after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  position: absolute;
  right: 0;
  top: 50%;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-right: 10px solid #0fa1e0;
  margin-top: -10px;
}
#cssmenu > ul > li:first-child >a {
  border-radius: 5px 0 0 0;
  -moz-border-radius: 5px 0 0 0;
  -webkit-border-radius: 5px 0 0 0;
}
#cssmenu > ul > li:last-child > a {
  border-radius: 0 0 0 5px;
  -moz-border-radius: 0 0 0 5px;
  -webkit-border-radius: 0 0 0 5px;
}
#cssmenu > ul > li.active a {
  box-shadow: inset 0 0 3px black;
  -moz-box-shadow: inset 0 0 3px black;
  -webkit-box-shadow: inset 0 0 3px black;
  background-color: #070707;
  background-image: url(data:image/png;base64,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);
  background-repeat: repeat-x;
}
#cssmenu > ul > li:hover > a {
  background-color: #070707;
  background-image: url(data:image/png;base64,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);
  background-repeat: repeat-x;
  box-shadow: inset 0 0 3px black;
  -moz-box-shadow: inset 0 0 3px black;
  -webkit-box-shadow: inset 0 0 3px black;
}
#cssmenu .has-sub {
  z-index: 1;
}
#cssmenu .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub ul {
  display: none;
  position: absolute;
  width: 150px;
  top: 5px;
  left: 100%;
}
#cssmenu .has-sub ul li {
  *margin-bottom: -1px;
}
#cssmenu .has-sub ul li a {
  background: #0fa1e0;
  border-bottom: 1px dotted #6fc7ec;
  filter: none;
  font-size: 11px;
  display: block;
  line-height: 120%;
  padding: 10px;
}
#cssmenu .has-sub ul li:hover a {
  background: #0c7fb0;
}
#cssmenu .has-sub .has-sub:hover > ul {
  display: block;
}
#cssmenu .has-sub .has-sub ul {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
}
#cssmenu .has-sub .has-sub ul li a {
  background: #0c7fb0;
  border-bottom: 1px dotted #6db2d0;
}
#cssmenu .has-sub .has-sub ul li a:hover {
  background: #095c80;
}