body {
  font-family: sans-serif;
  background: #f7f7f7;
  padding: 20px;
  text-align: center;
}
.container {
  background: white;
  padding: 30px;
  border-radius: 12px;
  max-width: 400px;
  margin: auto;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
label {
  display: block;
  margin: 15px 0 5px;
  font-weight: bold;
}
input {
  width: 90%;
  padding: 8px;
  margin-bottom: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
}
button {
  padding: 10px 20px;
  background: #0088ff;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}
button:hover {
  background: #006fd6;
}
#result {
  margin-top: 20px;
  font-size: 1.2em;
  color: #333;
}