form {
  max-width: 600px;
  margin: 0 auto;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: bold;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  font-size: 16px;
  margin-bottom: 20px;
}

select {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  font-size: 16px;
  margin-bottom: 20px;
}

input[type="submit"] {
  background-color: #4CAF50;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
}

input[type="submit"]:hover {
  background-color: #3e8e41;
}

.error-message {
  color: #f44336;
  font-size: 14px;
  margin-top: 10px;
}