<nav>
  <ul>
    <li><a href="">nav01</a></li>
    <li><a href="">nav02</a></li>
    <li><a href="">nav03</a></li>
    <li><a href="">nav04</a></li>
    <li><a href="">nav05</a></li>
  </ul>
</nav>

* {
  box-sizing: border-box;
}
body {
  min-height: 100vh;
  background: #dce4ec;
  margin: 0;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
}
li {
  list-style-type: none;
}
a {
  color: #555;
  background: #fff;
  padding: 10px 20px;
  text-decoration: none;
}


/* layout */
nav ul {
  text-align: center;
}
nav ul li {
  display: inline-block;
}