navbar-nav me-auto mt-2 mt-lg-0

    <nav class="navbar navbar-expand-lg navbar-light" style="background-color: #e3f2fd;">
      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav02"
        aria-controls="navbarNav02" aria-expanded="false" aria-label="ナビゲーション切替">
        <span class="navbar-toggler-icon"></span>
      </button>
      <a class="navbar-brand" href="#">ブランド</a>
      <div class="collapse navbar-collapse" id="navbarNav02">
        <ul class="navbar-nav me-auto mt-2 mt-lg-0">
          <li class="nav-item active"><a class="nav-link" href="#">リンク1</a></li>
          <li class="nav-item"><a class="nav-link" href="#">リンク2</a></li>
          <li class="nav-item"><a class="nav-link" href="#">リンク3</a></li>
        </ul>
        <form class="d-flex">
          <input class="mr-sm-2" type="search" placeholder="検索" aria-label="検索">
          <button class="btn btn-outline-light my-2 my-sm-0"  style="background-color: #e3f2fd;" type="submit">Search</button>
        </form>
      </div>
    </nav>

    <nav class="navbar navbar-expand-lg navbar-light bg-light">
      <!-- navbar-brand -->
      <a class="navbar-brand" href="#">TOP</a>
      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#Nav5" aria-controls="Nav5"
        aria-expanded="false" aria-label="ナビゲーション切替">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="Nav5">
        <ul class="navbar-nav me-auto mt-2 mt-lg-0">
          <li class="nav-item active"><a class="nav-link" href="#">リンク1</a></li>
          <li class="nav-item"><a class="nav-link" href="#">リンク2</a></li>
          <li class="nav-item"><a class="nav-link" href="#">リンク3</a></li>
        </ul>
        <form class="d-flex">
          <input class="mr-sm-2" type="search" placeholder="検索" aria-label="検索">
          <button class="btn btn-light my-2 my-sm-0" type="submit">検索</button>
        </form>
      </div>
    </nav>

    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
        aria-controls="navbarNav" aria-expanded="false" aria-label="ナビゲーション切替">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div class="collapse navbar-collapse" id="navbarNav">
        <a class="navbar-brand" href="#">ブランドを隠す</a>
        <ul class="navbar-nav me-auto mt-2 mt-lg-0">
          <li class="nav-item active"><a class="nav-link" href="#">リンク1<span class="visually-hidden">(現位置)</span></a>
          </li>
          <li class="nav-item"><a class="nav-link" href="#">リンク2</a></li>
          <li class="nav-item"><a class="nav-link" href="#">リンク3</a></li>
        </ul>
        <form class="d-flex">
          <input class="mr-sm-2" type="search" placeholder="検索" aria-label="検索">
          <button class="btn btn-light my-2 my-sm-0" type="submit">検索</button>
        </form>
      </div>
    </nav>