html {
  height: 100%;
  width: 100%;
}
body {
  height: 100%;
  font-family: Arial, Helvetica, sans-serif;
  margin: 0px;
  padding: 0px;
  background-color: black;
}
.button {
  height: 210px;
  width: 980px;
  margin: auto;
  background-position: center center;
  background-repeat: no-repeat;
  cursor: pointer;
  font-size: 0px;
}