* {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

h2 {
  padding: 1rem;
}
.container {
  display: flex;
  justify-content: space-evenly;
}

nav ul {
  text-align: center;
  margin: 0 1rem;
  list-style: none;
  border: 1px solid #ccc;
  padding: 0;
}

nav li {
  color: #333;
}

nav li:nth-child(even) {
  background-color: #e8e8e8;
}

nav a {
  display: block;
  text-decoration: none;
  padding: 8px 20px;
  color: #333;
}

nav li:hover a {
  background-color: #666;
  color: #fff;
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }
  nav ul {
    margin: 1rem 0;
  }
}