body {
  font-family: Arial, sans-serif;
  background: #f3f3f3;
  padding: 40px;
  display: flex;
  justify-content: center;
}

.container {
  background: white;
  padding: 30px;
  max-width: 500px;
  width: 100%;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

input, select, button {
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  font-size: 16px;
}

#results {
  margin-top: 20px;
  text-align: left;
}