CSS Drop Down Menu does not look finished in Dreamweaver but preview looks fine


If you paste this into a webpage like on Dreamweaver why does it not look very well designed. Is there more code that can make it look finished?

I expect to see the finished horizontal navigation bar in Dreamweaver! It only looks properly when I preview it!?

If it does not look properly in Dreamweaver, how can I design further parts of the website around it? I am new to drop down menus - but when I have done static horizontal menus they look fine in Dreamweaver so how can I get the design looking finished?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Untitled Document</title>
body {
  font-family: 'Lucida Grande', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  padding: 20px 50px 150px;
  font-size: 13px;
  text-align: center;
  background: #E3CAA1;

ul {
  text-align: left;
  display: inline;
  margin: 0;
  padding: 15px 4px 17px 0;
  list-style: none;
  -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.15);
  -moz-box-shadow: 0 0 5px rgba(0, 0, 0, 0.15);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.15);
ul li {
  font: bold 12px/18px sans-serif;
  display: inline-block;
  margin-right: -4px;
  position: relative;
  padding: 15px 20px;
  background: #fff;
  cursor: pointer;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -ms-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
ul li:hover {
  background: #555;
  color: #fff;
ul li ul {
  padding: 0;
  position: absolute;
  top: 48px;
  left: 0;
  width: 150px;
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
  box-shadow: none;
  display: none;
  opacity: 0;
  visibility: hidden;
  -webkit-transiton: opacity 0.2s;
  -moz-transition: opacity 0.2s;
  -ms-transition: opacity 0.2s;
  -o-transition: opacity 0.2s;
  -transition: opacity 0.2s;
ul li ul li {
  background: #555;
  display: block;
  color: #fff;
  text-shadow: 0 -1px 0 #000;
ul li ul li:hover { background: #666; }
ul li:hover ul {
  display: block;
  opacity: 1;
  visibility: visible;

 </style> - See more at: http://www.csstutorial.net/css_misc_inserting.php#sthash.eYXuZ280.dpuf

      <li>Web Design</li>
      <li>Web Development</li>
      <li>Web Design</li>
      <li>Web Development</li>
<p>This is some text </p>



You have some stray text on line 75 to the right of the close style tag </style>
and there is a stray dash in front of “transition” on line 60.

Dreamweaver is not a browser and therefore does not render pages very accurately. The best way to evaluate the performance of your code is to view it in a real browser. Dreamweaver has a nice editor, but it is not a browser.