Bulma class: .level-left

<nav class="level">
  <!-- Left side -->
  <div class="level-left">
    <div class="level-item">
      <p class="subtitle is-5">
        <strong>123</strong> posts
      </p>
    </div>
    <div class="level-item">
      <div class="field has-addons">
        <p class="control">
          <input class="input" type="text" placeholder="Find a post">
        </p>
        <p class="control">
          <button class="button">
            Search
          </button>
        </p>
      </div>
    </div>
  </div>

  <!-- Right side -->
  <div class="level-right">
    <p class="level-item"><strong>All</strong></p>
    <p class="level-item"><a>Published</a></p>
    <p class="level-item"><a>Drafts</a></p>
    <p class="level-item"><a>Deleted</a></p>
    <p class="level-item"><a class="button is-success">New</a></p>
  </div>
</nav>