<div class="bg-black inner_nav">
  <div class="ccontainer">
    <div class="crow g-0">
      <div class="ccol ccol-xl-3 ccol-lg-4 ccol-md-7 ccol-sm-8 mx-auto">
        <ul class="tab-links">
          <li>
            <a class="tab-link" id="services_history" href="services_history.php">Service History</a>
          </li>
          <li>
            <a class="tab-link active" id="opportunities" href="opportunities.php">Opportunities</a>
          </li>
          <li>
            <a class="tab-link" id="ticket_list" href="ticket-list.php">Tickets</a>
          </li>
          <li>
            <a class="tab-link" id="settings" href="#settings">Settings</a>
          </li>
        </ul>
      </div>
    </div>
  </div>
</div>