<nav class="mobile-tab-bar">
  <a href="/">Home</a>
  <a href="/profile">Profile</a>
  <a href="/settings">Settings</a>
</nav>

<style>
  .mobile-tab-bar {
    position: fixed;
    bottom: 0;
    width: 100%;
    display: flex;
    justify-content: space-around;
    padding: 1rem;
    background-color: #222;
    color: white;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  }
  a {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
  }
</style>
