body {
  background: url('numbers.jpg') no-repeat 50% 50%;
  background-size: 100%;
  height: 600px;
}

.container {
  text-align: center;
  margin-top: 15rem;
}

h1 {
  color: rgb(246, 247, 248);
}

p {
  font-size: 25px;
  font-weight: bold;
  color: rgb(246, 247, 248);
}

#guess-input {
  width: 140px;
}

#guess-btn {
  background-color: rgb(114, 238, 43);
  color: rgb(246, 247, 248);
}

.message {
  font-size: 40px;
}