body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #808080;
  color: #FFD700;
  text-align: center;
}

header, footer {
  background-color: #111;
  padding: 20px;
}

main {
  margin: 50px auto;
  width: 90%;
  max-width: 600px;
}

input[type="text"] {
  padding: 10px;
  width: 70%;
  margin: 10px;
}

button {
  padding: 10px 20px;
  background-color: #FFD700;
  color: #000;
  border: none;
  cursor: pointer;
  font-weight: bold;
}

#result {
  margin-top: 20px;
}