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

body{
  background: #222;
  height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
  font-size: 8rem;
}

.safe{
  color: green;
}

.warning{
  color: #f2f20d;
}

.danger{
  color: red;
}