body {
  font-family: Arial, sans-serif;
  margin: 2em;
  background-color: #f9f9f9;
}
form {
  background: white;
  padding: 20px;
  border-radius: 8px;
  width: 100%;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
input, button {
  display: block;
  margin-top: 10px;
  padding: 10px;
  width: 90%;
}