html, body{
  margin: 0;
  padding:0;
}
#canvas {
  display: block;
  height:100vh;
  width:100vw;
}

#button {
  position:absolute;
  font-family: serif;
  margin-left: 8px;
  margin-right: 20px;
  color: white;
  border-style: solid;
  border-width: 1px;
  border-radius: 35px;
  margin-top: 15px;
  background-color: transparent;
  padding: 5px 15px;
  text-align: center;
  font-style: italic;
  font-style:lighter;
  font-size: calc(18px + 0vw);
}