html, body {
   margin: 0;
   padding: 0;
   font-size: 10px;
}

#title {
   text-align: center;
}

.bar {
   fill: black;
}

.bar:hover {
   fill: red;
}

#tooltip {
   visibility: hidden;
   position: absolute;
   border: 1px solid black;
   padding: 5px;
   font-size: 1.5rem;
   background-color: white;
}