body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #121212;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 50px;
}

.container {
  text-align: center;
  max-width: 600px;
}

input {
  padding: 10px;
  font-size: 16px;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  background-color: #2ea44f;
  color: white;
  border: none;
  border-radius: 5px;
}

#card {
  margin-top: 20px;
  border: 1px solid #444;
  padding: 20px;
  border-radius: 10px;
  background-color: #1e1e1e;
}