引导5菜单在悬停时摇动

Question

你好，我有问题的摇动，当我在link.nav上悬停，我已经添加了边界底部，以显示在悬停。

<section id="main_header">
<div class="container-fluid mainbar-bg py-1">
    <div class="container">
       
    <nav class="navbar navbar-expand-lg navbar-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar w/ text</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarText">
      <!--<span class="navbar-text">
        Navbar text with an inline element
      </span>-->
      <ul class="navbar-nav ml-auto mb-2 mb-lg-0">
        <li class="nav-item mx-4 py-4">
          <a class="nav-link active" aria-current="page" href="#">Strona Główna<br>
              <span class="nav-link-down">Ekran początkowy</span>
            </a>
        </li>
        <li class="nav-item mx-4 py-4">
          <a class="nav-link" href="#">Profil<br>
              <span class="nav-link-down">Zarządzanie</span>
            </a>
        </li>
        <li class="nav-item mx-4 py-4">
          <a class="nav-link" href="#">Pricing</a>
        </li>
      </ul>

    </div>
  </div>
</nav>


    </div>
</div>
</section>

CSS样式：

.nav-link-down {
    font-size: 0.75rem;
    color: #b1b1b1;
}

.nav-link.active {
    color: #1f1e2e!important;
}

.nav-link {
    color: #1f1e2e!important;
}

.nav-link:hover {
    border-bottom: 1px red solid;
}

(我把背景变黑了，向你展示了一个摇着的容器) https://www.codeply.com/p/XrkrwVnrJD

问题gif

Answer 1

简单的攻击是将border-bottom: 1px #212529 solid;添加到.nav-link中，现在在悬停之前添加了1 1px的border-bottom，并且由于背景颜色相同而被隐藏起来，因此不应该有抖动的效果。

这是一个演示。(在整页中运行它)

​

.nav-link-down {
    font-size: 0.75rem;
    color: #b1b1b1;
}

.nav-link.active {
    color: #ffffff!important;
}

.nav-link {
    color: #ffffff!important;
    border-bottom: 1px #212529 solid;
}

.nav-link:hover {
    border-bottom: 1px red solid;
}

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">

<section id="main_header">
<div class="container-fluid bg-dark py-1">
    <div class="container">
       
    <nav class="navbar navbar-expand-lg navbar-light">
  <div class="container-fluid">
    <a class="navbar-brand" href="#">Navbar w/ text</a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse" id="navbarText">
      <!--<span class="navbar-text">
        Navbar text with an inline element
      </span>-->
      <ul class="navbar-nav ml-auto mb-2 mb-lg-0">
        <li class="nav-item mx-4 py-4">
          <a class="nav-link active" aria-current="page" href="#">Strona Główna<br>
              <span class="nav-link-down">Ekran początkowy</span>
            </a>
        </li>
        <li class="nav-item mx-4 py-4">
          <a class="nav-link" href="#">Profil<br>
              <span class="nav-link-down">Zarządzanie</span>
            </a>
        </li>
        <li class="nav-item mx-4 py-4">
          <a class="nav-link" href="#">Pricing</a>
        </li>
      </ul>

    </div>
  </div>
</nav>


    </div>
</div>
</section>

​

Answer 2

首先，将导航链接添加到边框并使其颜色透明。

enter code here
.nav-link {
color: #1f1e2e!important;
border-bottom: 1px solid transprant;

}

然后

enter code here.nav-link:hover {
border-bottom: 1px solid red;

}