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

header {
  background-color: #0077cc;
  color: white;
  padding: 15px;
  text-align: Left;
}

nav a {
  margin: 0 10px;
  color: white;
  text-decoration: none;
}

main {
  padding: 20px;
  text-align: center;
}

button {
  padding: 10px 20px;
  background-color: #0077cc;
  color: white;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #005fa3;
}

footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 10px;
  position: fixed;
  bottom: 0;
  width: 100%;
}