form input, form textarea {
  width: 100%;
  max-width: 500px;
  padding: 10px;
  font-size: 1em;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  color: #333;
}
form button {
  padding: 10px 20px;
  font-size: 1em;
  background: #007acc;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
form button:hover {
  background: #005fa3;
}
html.dark form input,
html.dark form textarea {
  background: #333;
  color: #f4f4f9;
  border-color: #555;
}


.success {
  color: #155724;
  background-color: #d4edda;
  padding: 10px;
  border: 1px solid #c3e6cb;
  border-radius: 4px;
  margin-bottom: 1em;
}

.error {
  color: #721c24;
  background-color: #f8d7da;
  padding: 10px;
  border: 1px solid #f5c6cb;
  border-radius: 4px;
  margin-bottom: 1em;
}