#example1 {
position:absolute;
width:150px;
height:100px;
color:blue;
text-align:center;
visibility:hidden;
z-index:10;
}
.claves {  font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; font-style: italic; font-weight: normal; color: #666666; cursor: help; text-decoration: none}