Bootstrap 导航栏不工作我的代码有问题吗？

Question

这是我的代码：<nav class="navbar navbar-expand-md navbar-dark bg-dark sticky-top"><div class="container-fluid">    <a class="navbar-brand" href="#"> <img src="https://i.stack.imgur.com/5XeYV.png" width="225" height="245"> </a>    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive">    </Button></div></nav>这就是显示内容： 单击此处查看显示内容帮助将不胜感激，谢谢

Answer 1

导航栏品牌形象必须调整大小，结构应如下所示

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">

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

            <img src="https://getbootstrap.com/docs/4.4/assets/brand/bootstrap-solid.svg" width="30" height="30"

                class="d-inline-block align-top" alt="">

            Bootstrap

        </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" id="navbarSupportedContent">

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

                <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="#" tabindex="-1" aria-disabled="true">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>