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

body {
  font-family: "Press Start 2P", cursive;
  color: white;
  background-color: #2d3436;
}

.secret-number {
  font-size: 2rem;
  border: 4px solid white;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  margin: 1rem auto;
  max-width: 250px;
}

.secret-number,
.guess-input,
.btn {
  font-size: 1.6rem;
}