Template:Infobox blockalt

.tooltipblock {

   position: relative;
   display: inline-block;
   border-bottom: 1px dotted black;

}

.tooltipblock .info {

   visibility: hidden;
   text-align: center;
   border-radius: 6px;
   padding: 5px 0;
   position: absolute;
   z-index: 1;
   bottom: 100%;
   left: 50%;
   margin-left: -60px;
   opacity: 0;
   transition: opacity 0.5s;

}

.tooltipblock .info {

   visibility: visible;
   opacity: 1;

}