Question

我需要在左侧获得品牌徽标，菜单项必须居中，右侧需要几个按钮。我已经尝试过使用flexbox方法，但是中心项无法很好地对齐。而且品牌徽标的空间很大，带有可点击的链接。

<nav class="navbar navbar-light navbar-expand-md bg-faded justify-content-center">
            <div class="container">
                <a href="/" class="navbar-brand d-flex w-100 mr-auto"><img src="assets/logo/" alt="logo"></a>
                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsingNavbar3">
    <span class="navbar-toggler-icon"></span>
</button>
                <div class="navbar-collapse collapse w-100 ml-auto" id="collapsingNavbar3">
                    <ul class="navbar-nav w-100 justify-content-center">
                        <li class="nav-item active">
                            <a class="nav-link" href="#">How it works</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Become a tutor</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Pricing</a>
                        </li>
                    </ul>
                    <ul class="nav navbar-nav ml-auto w-100 justify-content-end">
                        <li class="nav-item">
                            <a class="btn btn-link" href="#">Sign In</a>
                        </li>
                        <li class="nav-item">
                            <a class="btn btn-primary" href="#">Sign Up</a>
                        </li>
                    </ul>
                </div>
            </div>
</nav>

Answer 1

在导航后添加的容器div使您松开了flexbox属性。您还可以将徽标设置为带有所有可能宽度的“ w-100”类。我删除了这些，并获得了一个对齐的导航栏。

<nav class="navbar navbar-light navbar-expand-md bg-faded justify-content-center align-items-center">
                <a href="/" class="navbar-brand p-0"><img src="assets/logo/" alt="logo"></a>
                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsingNavbar3">
    <span class="navbar-toggler-icon"></span>
</button>
                <div class="navbar-collapse collapse w-100 ml-auto" id="collapsingNavbar3">
                    <ul class="navbar-nav w-100 justify-content-center">
                        <li class="nav-item active">
                            <a class="nav-link" href="#">How it works</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Become a tutor</a>
                        </li>
                        <li class="nav-item">
                            <a class="nav-link" href="#">Pricing</a>
                        </li>
                    </ul>
                    <ul class="nav navbar-nav ml-auto w-100 justify-content-end">
                        <li class="nav-item">
                            <a class="btn btn-link" href="#">Sign In</a>
                        </li>
                        <li class="nav-item">
                            <a class="btn btn-primary" href="#">Sign Up</a>
                        </li>
                    </ul>
                </div>
        </nav>

结果是fiddle。

Answer 2

这是我的工作示例。您只需要将所有内容放入单个div中即可通过引导程序类证明内容的合理性。另外，我正在使用navbar品牌，并根据屏幕分辨率使它们显示隐藏。您可以使用js来做到这一点，一旦页面完全加载，js可能会更加流畅。

@media only screen and (max-width: 991px) {
  .logo {
    display: flex;
  }
  .collapse .navbar-brand {
    display: none
  }
}

@media only screen and (min-width: 992px) {
  .logo {
    display: none;
  }
  .collapse .navbar-brand {
    display: none;
  }
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<nav class="navbar navbar-expand-lg navbar-light bg-light d-flex ">
  <a class="navbar-brand logo" href="#">Navbar</a>

  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

  <div class="collapse navbar-collapse justify-content-between" id="navbarSupportedContent">
    <a class="navbar-brand" href="#">Navbar</a>
    <ul class="navbar-nav">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                        Dropdown
                    </a>
        <div class="dropdown-menu" aria-labelledby="navbarDropdown">
          <a class="dropdown-item" href="#">Action</a>
          <a class="dropdown-item" href="#">Another action</a>
          <div class="dropdown-divider"></div>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>

</nav>

Bootstrap 4 Navbar将内容左，中和右对齐

2 个答案: