.flo1t {
  background-color: transparent;
  background-image: url("Banner.gif");
  background-attachment: scroll;
  background-repeat:no-repeat;
  background-position: top center;
  padding: 30px;
  padding-bottom:5px;
  margin: 25px 25px 25px 25px;
  border: 0px solid #5e6d7c! important;
  width: 362px; 
  height: 140px;
  visibilty:visible;
  position:absolute;
}

.flo1t:hover {
  background-image: url("Buyuk.jpg");
  height: 600px;
  width: 425px; 
  visibilty:visible;
  position:absolute;
}