body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}
.container {
  text-align: center;
  background: #fff;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}
.subtitle {
  color: #555;
  margin-bottom: 20px;
}
select, button {
  padding: 10px;
  margin: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
}
.card {
  margin-top: 20px;
  padding: 20px;
  background: #e8f4ff;
  border-radius: 15px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}