#contenedorbanner {
  padding-right: 20px; 
  padding-left: 20px; 
  padding-bottom: 20px; 
  padding-top: 20px; 
  width: 468px;  
  height: 60px;
}
.banner {
  position: relative; 
  display: none; 
  visibility: hidden; 
  left: 0px; 
  top: 0px;
}