import java.time.ZoneId;

 ZoneId defaultZone = ZoneId.systemDefault();

 System.out.println("Default Time Zone: " + defaultZone);

<header>

    <nav class="navbar navbar-expand-md bg-dark border-bottom border-body" data-bs-theme="dark">

      <div class="container ">

        <a class="navbar-brand" href="/">

          <img src="..." alt="Logo" height="50px">

        </a>

        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"

          aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">

          <span class="navbar-toggler-icon"></span>

        </button>

        <div class="collapse navbar-collapse" id="navbarNav">

          <ul class="navbar-nav ms-auto">

            <li class="nav-item">

              <a class="nav-link active" aria-current="page" href="/">Home</a>

            </li>

            <li class="nav-item">

              <a class="nav-link" href="#">...</a>

            </li>

          </ul>

        </div>

      </div>

    </nav>

  </header>