body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

.container {
  padding: 20px;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  background: #333;
  padding: 10px;
}

nav ul li {
  margin-right: 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
}

h1 {
  color: #333;
}

form {
  display: flex;
  flex-direction: column;
  width: 300px;
}

form label {
  margin-top: 10px;
}

form input {
  padding: 5px;
  margin-top: 5px;
}

form button {
  margin-top: 15px;
  padding: 10px;
  background: #333;
  color: white;
  border: none;
  cursor: pointer;
}