html - Bootstrap 4 .nav-link 填充

Question

我想删除 .navbar-nav 中第一个 .nav-link 的左侧填充。

这是一个example .

在 bootstrap 4 中，我创建了一个导航并为 .nav-link 提供了填充:

.navbar-dark .navbar-nav .nav-link {
    color: #fff;
    padding-left: 1rem;
    padding-right: 1rem;
}
    

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<section class="navigation container-fluid">
  <nav class="container navbar navbar-expand-lg navbar-dark">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#mainNavbar" aria-controls="mainNavbar" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="mainNavbar">
      <ul class="navbar-nav">
        <li class="nav-item">
          <a class="nav-link" href="http://www.flakneconstructionllc.com">Home <span class="sr-only">(current)</span></a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="about">About Us</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="services">Services</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="gallery">Gallery</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="contact">Contact Us</a>
        </li>
      </ul>
    </div>
  </nav>
</section>

但它不起作用，因为 .navbar-nav 和 .nav-link 之间有一个 .nav-item。

你们有什么解决办法吗？

在这种情况下如何选择第一项？

Answer 1

最简单的方法是使用 pl-0 填充实用程序类。您可以在第一个nav-link上使用它，如果您想删除所有左侧空白，也可以在navbar上使用它。 p>

<section class="navigation container-fluid">
    <nav class="container pl-0 navbar navbar-expand bg-dark navbar-dark">
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#mainNavbar" aria-controls="mainNavbar" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

        <div class="collapse navbar-collapse" id="mainNavbar">
            <ul class="navbar-nav">
                <li class="nav-item">
                    <a class="nav-link pl-0" href="http://www.flakneconstructionllc.com">Home <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="about">About Us</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="services">Services</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="gallery">Gallery</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="contact">Contact Us</a>
                </li>
            </ul>
        </div>
    </nav>
</section>

https://www.codeply.com/go/hIgX0LyIaB

要使用 CSS 定位第一个链接，请使用...

.navbar-nav .nav-item:first-child .nav-link {
    padding-left: 0;
}