body {
	font-family: Arial, Helvetica, sans-serif;
	background-color: #000;
	height:100%;
    margin:0;
    padding:0;
}
html {
  height:100%;
  margin:0;
  padding:0;
}
#center {
  padding:0;
  width:500px;
  min-height:150px;
  position:absolute;
  top:50%;                  
  left:50%;
  margin:-75px 0 0 -250px;
}

* html #center {
  height:150px;
}