html {
  font-family: sans-serif;
  font-size: 20px;
  padding: 0;
  margin: 0;
  background-color: cadetblue;
}

div {
  border: solid 3px orange;
  border-radius: 5px;
  padding: 20px;
  margin: 10px 0;
  text-align: center;
  box-shadow: 1px 1px 3px #666 inset;
  /*  box-shadow: 1px 1px 3px #666;*/
}

div:first-child {
  font-size: 60px;
  color: darkslateblue;
  text-shadow: 2px 2px 2px grey;
}

div:nth-child(2) {
  font-size: 40px;
  font-family: monospace;
  color: firebrick;
  text-shadow: 2px 2px 2px grey;
}

button {
  width: 120px;
  padding: 10px;
  border-radius: 5px;
  font-size: 20px;
}

#btnReset {
  display: none;
}