body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 20px;
  background-color: #f2f2f2;
}

.form-container {
  max-width: 700px;
  margin: auto;
  background-color: #ffffff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  color: #333;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.form-group button {
  padding: 12px 20px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

.form-group button:hover {
  background-color: #218838;
}

.receipt {
  display: none;
  border: 1px solid #ddd;
  padding: 20px;
  margin-top: 20px;
  background-color: #fff;
  border-radius: 4px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.receipt h2 {
  margin-top: 0;
  color: #333;
}