html - 如何将悬停效果添加到引导导航菜单

Question

大家好，我是网络开发的新手，我正在尝试向我的导航菜单添加悬停效果，类似于此链接中的第一个示例:https://codepen.io/Calloumi/pen/vndlH

我试图对我的 bootstrap html 导航菜单实现相同的想法，但是我的行为略有不同，只有底部边框似乎向内移动，当我将鼠标悬停在链接上并悬停在它们上时，我的菜单项也会向上移动.我不确定需要添加/更改什么才能使其以相同的方式工作

.navbar-light .navbar-nav .nav-link {
  text-transform: uppercase;
  text-align: center;
  font-size: 13px;
  text-decoration: none;
  background: white;
  color: black;
  font-family: "open-sans";
  transition: 0.3s ease;
  border-top: 4px solid #FFFFFF;
  border-bottom: 4px solid #FFFFFF;
  padding: 20px 0;
  margin: 0 20px;
}

.navbar-light .navbar-nav .nav-link.active,
.navbar-light .navbar-nav .nav-link:hover {
  border-top: 4px solid #000000;
  border-bottom: 4px solid #000000;
  padding: 6px 0px;
  background: #11ADE8;
}

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/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/1.14.6/umd/popper.min.js" integrity="sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js" integrity="sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k" crossorigin="anonymous"></script>
<nav class="navbar fixed-top navbar-expand-md navbar-light ">

  <div class="container-fluid">

    <a class="navbar-brand " href="#">
      <img src="images/logoblue.png" alt="">
    </a>
    <button class="navbar-toggler first-button darken-3" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
       <div class="animated-icon1"><span></span><span></span><span></span></div>
        </button>
    <div class="collapse navbar-collapse" id="navbarResponsive">
      <ul class="navbar-nav ml-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="#">Services</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Products</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Booking</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Prices</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Gallery</a>
        </li>
        <li class="nav-item">
          <a class="nav-link" href="#">Contact us</a>
        </li>
      </ul>
</nav>

非常感谢任何有助于实现与我的导航菜单相同的悬停效果的帮助。

Answer 1

您有大量的 HTML 用于简单的导航。您链接的代码笔正确执行。一组包含在导航元素中的链接(即 anchor 标记)。

此处正确的解决方案是简化您的 HTML。

nav {
  margin-top: 40px;
  padding: 24px;
  text-align: center;
  box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  background: #3fa46a;
}

nav a {
  transition: 0.3s ease;
  background: #3fa46a;
  color: white;
  font-size: 20px;
  text-decoration: none;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  padding: 20px 0;
  margin: 0 5px;
  font-size: 17px;
}
nav a:hover {
  border-top: 4px solid white;
  border-bottom: 4px solid white;
  padding: 6px 0; 
}

<nav>
    <a href="#">Home <span class="sr-only">(current)</span></a>
    <a href="#">Services</a>
    <a href="#">Products</a>
    <a href="#">Booking</a>
    <a href="#">Prices</a>
    <a href="#">Gallery</a>
    <a href="#">Contact us</a>
</nav>