styles.css

html,
body {
  margin: 0;
  margin-top: 0.5em;
  padding: 0;
}

svg {
  font: 10px sans-serif;
  text-align: center;
  display: block;
  margin: auto;
}

a {
  text-decoration: none;
}

body {
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
}

.tile-text {
  cursor: default;
}

#title {
  font-size: 45px;
  margin-bottom: 10px;
}

#description {
  padding-bottom: 1.5rem;
}

div.tooltip {
  position: absolute;
  padding: 10px;
  font: 12px Arial;
  background: rgba(255, 255, 204, 0.95);
  box-shadow: 1px 1px 10px rgba(128, 128, 128, 0.6);
  border: 0;
  border-radius: 2px;
  pointer-events: none;
}

#legend {
  font-size: 15px;
  text-align: center;
  display: block;
  margin: auto;
  padding-bottom: 5px;
  margin-bottom: 2rem;
  margin-top: 1rem;
}