body {
  background-color: black;
  font-family: sans-serif;
  margin: 0;
}

.box {
  width: 250px;
  background-color: #71F5D1;
  padding: 20px 5px 25px 5px;
  margin: 100px auto;
  text-align: center;
  font-size: 2em;
  font-weight: bold;
}