body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
}
.container {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1 {
  text-align: center;
}
.form-group {
  margin-bottom: 15px;
}
.form-group label {
  display: block;
  margin-bottom: 5px;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
}
.btn {
  display: inline-block;
  padding: 10px 15px;
  color: #fff;
  background-color: #007bff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}
.btn:hover {
  background-color: #0056b3;
}
.alert {
  padding: 10px;
  margin-top: 20px;
  border-radius: 4px;
}
.alert-info {
  background-color: #d9edf7;
  color: #31708f;
}
.alert-error {
  background-color: #f2dede;
  color: #a94442;
}