body{
  background-color:#FFF;
  }
  #logo{
  width:199px;
  height:199px; 
  position: absolute; 
  top:50%; 
  left: 50%; 
  margin-left:-100px; 
  margin-top: -110px; 
  background-image: url(img/logo.jpg);
  display:none;
  }