Bootstrap 4，bg-inverse 不显示? [英] Bootstrap 4, bg-inverse not showing?

问题描述

尝试遵循 Bootstraps 文档中的导航栏示例时，我遇到了导航栏背景颜色未加载的问题.

Trying to follow the navbar example in Bootstraps documentation, I have a problem where the background colour of the navbar doesn't get loaded.

<nav class="navbar navbar-inverse bg-inverse">
    <a class="navbar-brand" href="#">Navbar</a>
</nav> 

我查看了 bootstrap.css，那里没有出现 bg-inverse.我应该自己创造颜色，还是我做错了什么?(我在一个 Angular 项目中工作)

I took a look in bootstrap.css and bg-inverse does not appear there. Am I supposed to create the colours myself, or am I doing something wrong? (I am working in an Angular project)

推荐答案

我认为您使用的是 Bootstrap beta 版本.使用 Alpha 版本.它将解决问题，他们没有为 navbar-inverse bg-inverse

I think you are using Bootstrap beta version. Use the Alpha version. It will solve the problem , they are not provide bootstrap 4 beta for the navbar-inverse bg-inverse

bootstrap -v 4.0.0.alpha6

<nav class="navbar navbar-inverse bg-inverse">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-inverse bg-primary">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
  <!-- Navbar content -->
</nav>

看看这个https://getbootstrap.com/docs/4.0/components/navbar/

bootstrap@4.0.0-beta

<nav class="navbar navbar-dark bg-dark">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-dark bg-primary">
  <!-- Navbar content -->
</nav>

<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
  <!-- Navbar content -->
</nav>

看看这个https://getbootstrap.com/docs/4.0/components/navbar/

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