btn-light

bootstrap5.css

bootstrap5.css
.btn-light {
  color: #212529;
  background-color: #f8f9fa;
  border-color: #f8f9fa;
}
bootstrap5.css
.btn-light:hover {
  color: #212529;
  background-color: #e2e6ea;
  border-color: #dae0e5;
}
bootstrap5.css
.btn-light:focus,
.btn-light.focus {
  box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}
bootstrap5.css
.btn-light.disabled,
.btn-light:disabled {
  color: #212529;
  background-color: #f8f9fa;
  border-color: #f8f9fa;
}
bootstrap5.css
.btn-light:not(:disabled):not(.disabled):active,
.btn-light:not(:disabled):not(.disabled).active,
.show > .btn-light.dropdown-toggle {
  color: #212529;
  background-color: #dae0e5;
  border-color: #d3d9df;
}
bootstrap5.css
.btn-light:not(:disabled):not(.disabled):active:focus,
.btn-light:not(:disabled):not(.disabled).active:focus,
.show > .btn-light.dropdown-toggle:focus {
  box-shadow: 0 0 0 0.2rem rgba(216, 217, 219, 0.5);
}

html bootstrap5 Sample

ボタンの色：btn-*

  <button type="button" class="btn btn-primary">btn-primary</button>
  <button type="button" class="btn btn-secondary">btn-secondary</button>
  <button type="button" class="btn btn-success">btn-success</button>
  <button type="button" class="btn btn-danger">btn-danger</button>
  <button type="button" class="btn btn-warning">btn-warning</button>
  <button type="button" class="btn btn-info">btn-info</button>
  <button type="button" class="btn btn-light">btn-light</button>
  <button type="button" class="btn btn-dark">btn-dark</button>
  <button type="button" class="btn btn-link">btn-link</button>

ナビバーの検索窓：form-inline

  <nav class="navbar navbar-expand navbar-dark bg-dark">
    <!-- 画面が狭い時はアイコン、画面が広い時メニューを表示 -->
    <a class="navbar-brand" href="#">TOP</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-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">
      <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
        <li class="nav-item active"><a class="nav-link" href="#">メニュー1</a></li>
        <li class="nav-item"><a class="nav-link" href="#">メニュー２</a></li>
        <li class="nav-item"><a class="nav-link" href="#">メニュー３</a></li>
      </ul>
      <form class="form-inline my-2 my-lg-0">
        <input class="form-control 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>

ナビゲーションバー 切替ボタンを左寄せに表示：mr-auto

  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-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 mr-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="form-inline my-2 my-lg-0">
        <input class="form-control 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>

ナビゲーションバーアイコンしか出さない

  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <!-- navbar-brand -->
    <a class="navbar-brand" href="#">TOP</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav2"
      aria-controls="navbarNav2" 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="navbarNav2">
      <ul class="navbar-nav mr-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="form-inline my-2 my-lg-0">
        <input class="form-control 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>

ブランドの表示・非表示 ブランドを折り畳んで隠すナビゲーションバ

  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-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 mr-auto mt-2 mt-lg-0">
        <li class="nav-item active"><a class="nav-link" href="#">リンク1<span class="sr-only">(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="form-inline my-2 my-lg-0">
        <input class="form-control 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>

ボタン：navbar

  <nav class="navbar navbar-dark bg-dark">
    <form class="form-inline">
      <button class="btn btn-light mr-3" type="button">通常のボタン</button>
      <button class="btn btn-sm btn-light" type="button">小サイズのボタン</button>
    </form>
  </nav>