body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

#color-display {
  width: 200px;
  height: 200px;
  border: 1px solid black;
  margin-bottom: 20px;
}

p {
  font-size: 1.2rem;
  font-weight: bold;
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  cursor: pointer;
}