body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background: #ffffff;
}

.header {
  background: #333;
  padding: 10px;
  text-align: center;
}

.header a {
  color: white;
  text-decoration: none;
  margin: 0 15px;
}

.form-container, .show-data {
  background: skyblue;
  padding: 20px;
  margin: 20px auto;
  width: 600px;
  box-shadow: 0 0 20px #ccc;
  border-radius: 20px;
}

input, textarea, button {
  width: 100%;
  padding: 10px;
  margin: 5px 0;
}

button {
  background: #28a745;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background: #218838;
}