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

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

nav ul li {
  margin: 0 15px;
}

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

.container {
  max-width: 800px;
  margin: 50px auto;
  padding: 20px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

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

footer {
  background: #333;
  color: white;
  padding: 20px;
  text-align: center;
}

footer ul {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
}

footer ul li {
  display: inline;
  margin: 0 10px;
}

footer ul li a {
  color: #fff;
  text-decoration: none;
}