body {
  font-family: Arial, sans-serif;
  background: #f4f6fb;
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
}

h2 {
  text-align: center;
}

label {
  display: block;
  margin-top: 10px;
}

select, input {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

th, td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: center;
}

button {
  margin-top: 15px;
  width: 100%;
  padding: 10px;
  background: #2b6cff;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #1f4fd8;
}

#message {
  text-align: center;
  margin-top: 10px;
  font-weight: bold;
}