body {
  font-family: sans-serif;
  background: #f0f2f5;
  margin: 0;
  padding: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 500px;
}

h1 {
  margin-bottom: 1rem;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input {
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 8px;
}

button {
  padding: 0.75rem;
  background-color: #1e90ff;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #0d6efd;
}

#result {
  margin-top: 1rem;
}