body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  padding: 20px;
}
.container {
  max-width: 450px;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  margin: auto;
}
h3 {
  text-align: center;
  color: #333;
}
label {
  display: block;
  margin-top: 10px;
  font-weight: bold;
  font-size: 14px;
}
input[type="text"],
input[type="password"],
input[type="date"],
select {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}
.radio-group,
.checkbox-group {
  margin-top: 15px;
  font-size: 14px;
}
.button-group {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}
button {
  flex: 1;
  padding: 10px;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  color: white;
}
button[onclick] {
  background-color: #28a745;
}
button[type="reset"] {
  background-color: #dc3545;
}
#output {
  margin-top: 20px;
  padding: 15px;
  border-radius: 5px;
  white-space: pre-line;
  display: none;
}
.error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
  display: block !important;
}
.success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
  display: block !important;
}