Untitled

<header>
        <nav class="navbar bg-body-tertiary" style="background-color: aquamarine;">
            <div class="container-fluid justify-content-center">
              <div class="center"><a class="navbar-brand">Zoo Book</a></div>
              <!-- <form class="d-flex" role="search">
                <input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
                <button class="btn btn-outline-success" type="submit">Search</button>
              </form> -->
            </div>
          </nav>
          <div class="secondary_nav">
            <ul class="nav justify-content-center" style="background-color: aqua;">
                <li class="nav-item">
                  <button style="background-color: transparent; border: none;" type="button">Home</button>
                </li>
                <div style="margin: 10px;"></div>
                <li class="nav-item">
                  <button style="background-color: transparent; border: none;"  type="button">Learn</button>
                </li>
                <div style="margin: 10px;"></div>
                <li class="nav-item">
                  <button style="background-color: transparent; border: none;"  type="button">Profile</button>
                </li>
              </ul>
          </div>
      </header>