laravel 将类从导航栏浅色更改为导航栏深色会隐藏导航栏
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Changing class from navbar-light to navbar-dark hides navbar
提问by PhotoJorie
I am building a website using Laravel and the Bootstrap CSS framework. I have a navbar at the top of the page which is used for navigating across different pages. By default, the Laravel set the navbar class to navbar-light. Since I don't want the navbar to be white, I changed it to navbar-dark. When I do this, all the content from navbar disappears, there remains only white bar without any content. What am I doing wrong?
我正在使用 Laravel 和 Bootstrap CSS 框架构建一个网站。我在页面顶部有一个导航栏，用于在不同页面之间导航。默认情况下，Laravel 将导航栏类设置为navbar-light. 由于我不希望导航栏为白色，因此我将其更改为navbar-dark. 当我这样做时，导航栏中的所有内容都消失了，只剩下没有任何内容的白条。我究竟做错了什么？
<nav class="navbar navbar-expand-md navbar-dark navbar-laravel" style="margin-bottom: 20px;">
<div class="container">
<a class="navbar-brand" href="{{ url('/') }}">
{{ config('app.name', 'Laravel') }}
</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">
<!-- Left Side Of Navbar -->
<ul class="navbar-nav mr-auto">
<li class="nav-item">
<a class="nav-link" href="/">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Messages <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">People <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Photos <span class="sr-only">(current)</span></a>
</li>
</ul>
<!-- Right Side Of Navbar -->
<ul class="navbar-nav ml-auto">
<!-- Authentication Links -->
@guest
<li><a class="nav-link" href="{{ route('login') }}">Login</a></li>
<li><a class="nav-link" href="{{ route('register') }}">Register</a></li>
@else
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{ Auth::user()->name }} <span class="caret"></span>
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="dashboard">
Dashboard
</a>
<a class="dropdown-item" href="{{ route('logout') }}"
onclick="event.preventDefault();
document.getElementById('logout-form').submit();">
Logout
</a>
<form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;">
@csrf
</form>
</div>
</li>
@endguest
</ul>
</div>
</div>
</nav>
回答by WebDevBooster
You also need to add the class bg-darkadditionally to navbar-dark.
您还需要将该类bg-dark额外添加到navbar-dark.
navbar-darkbasically just determines what color the text should be i.e. light text for a dark-background navbar and dark text for a light-colored navbar.
navbar-dark基本上只是确定文本应该是什么颜色，即深色背景导航栏的浅色文本和浅色导航栏的深色文本。
bg-darkthen determines the actual background-color of the navbar. But other colors would work just as well. For example, bg-primaryor bg-dangerwould work well with navbar-dark.
bg-dark然后确定导航栏的实际背景颜色。但其他颜色也同样适用。例如，bg-primaryorbg-danger可以很好地与navbar-dark.
回答by acharmat
add bg-darkclass
添加bg-dark班级
<nav class="navbar navbar-expand-md navbar-dark bg-dark navbar-laravel">
