body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}
main {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1 {
  color: #333;
  margin-bottom: 10px;
  text-align: center;
}
h2 {
  color: #666;
  margin-bottom: 10px;
}
label {
  display: block;
  margin-bottom: 10px;
}
input[type="text"], input[type="email"], textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 5px;
}
button[type="submit"] {
  background-color: #4CAF50;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
button[type="submit"]:hover {
  background-color: #3e8e41;
}
.error-message {
  color: #f44336;
  font-size: 12px;
  margin-bottom: 10px;
}
.success-message {
  color: #4CAF50;
  font-size: 16px;
  margin-bottom: 10px;
}
section {
  margin-bottom: 20px;
}
section h2 {
  margin-top: 0;
}