body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f7f7;
  color: #333;
}

header {
  background: #3e8e41;
  color: white;
  padding: 20px;
  text-align: center;
}

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

main {
  padding: 20px;
}

footer {
  background: #eee;
  text-align: center;
  padding: 10px;
  position: fixed;
  width: 100%;
  bottom: 0;
}

form {
  background: #fff;
  padding: 20px;
  border-radius: 6px;
  max-width: 400px;
  margin: auto;
}

input, button {
  margin-top: 10px;
  width: 100%;
  padding: 10px;
}

button {
  background-color: #3e8e41;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #367638;
}