a.info{
position:relative;
text-decoration:none
}
 
a.info:hover{
z-index:2;
}
 
a.info span{
display: none
}
 
a.info:hover span{
display:block;
position:absolute;
top:2em; left:2em; 
border:1px solid #545454;
background-color:#dedede;
padding:5px;
}