@import url("https://fonts.googleapis.com/css?family=Open+Sans");
:root {
  --background-Color: rgb(255, 255, 255);
  --tooltip-Color: gray;
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--background-Color);
  font-family: 'Open Sans', sans-serif;
}

#container {
  text-align: center;
  margin: 15px;
  shape-rendering: crispEdges;
}

#title {
  font-size: 30px;
  font-weight: bold;
}

#description {
  font-size: 23px;
  font-weight: bold;
}

.cell:hover {
  stroke: var(--tooltip-Color);
}

#tooltip {
  padding: 8px;
  background: var(--tooltip-Color);
  border-radius: 2px;
  color: white;
  font-size: 12px;
  pointer-events: none;
}

/* Creates a small triangle extender for the tooltip */
#tooltip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 10px;
  width: 100%;
  line-height: 1;
  color: var(--tooltip-Color);
  position: absolute;
  pointer-events: none;
  content: "\25BC";
  text-align: center;
  margin: -3px 0 0 0;
  top: 100%;
  left: 0;
}

.legend {
  font-size: 12px;
}

#footer {
  margin: 15px;
  font-weight: bold;
  font-size: 0.80em;
  text-align: center;
}

@media screen and (max-width: 600px) {
  #title {
    font-size: 0.9em;
  }

  #description {
    font-size: 0.7em;
  }

  #footer {
    font-size: 0.6em;
  }
}