我正在使用 Bootstrap 4 并尝试使导航项与我的导航栏具有相同的高度，这样当我向其添加背景色时，它看起来就像穿过导航栏的条纹。
最初，该元素居中，并在顶部和下方留有空间。我添加了负边距以使其与顶部相对，但是当我尝试添加“margin-bottom”时同样没有用
然后我尝试固定导航栏的高度，但是当我这样做并单击切换按钮以降低导航栏元素时，它们没有显示，因为固定高度阻止了它出现。
<body>
<nav class="navbar navbar-dark bg-dark text-center">
<div class="container">
<div class="mr-auto order-0" class= "d-flex align-items-stretch">
<a class="navbar-brand ml-auto" style="background-color:red; line-height: 58px; margin-top:-9px; padding: 0 20px 0 20px;" class="nav-item active" href="#">Matthew Krebs</a>
</div>
<a class="navbar-brand text-center" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive"
aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarResponsive">
<ul class="navbar-nav ml-auto mx-auto">
<li class="nav-item active">
<a class="nav-link" href="#">Home
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">About</a>
</li>
</ul>
</div>
</div>
</nav>
</body>
最佳答案
给你!
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<title>Hello, world!</title>
</head>
<body>
<nav style="padding-top: 0px; padding-bottom: 0px;" class="navbar navbar-expand-lg navbar-light bg-light" id="navbar">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<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="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
</div>
</nav>
<h1>Hello, world!</h1>
<!-- Optional JavaScript; choose one of the two! -->
<!-- Option 1: jQuery and Bootstrap Bundle (includes Popper) -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script>
<!-- Option 2: jQuery, Popper.js, and Bootstrap JS
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>
-->
<script>
document.querySelectorAll(".nav-item").forEach(item => {
item.style.height = document.getElementById("navbar").offsetHeight;
item.style.backgroundColor = 'aqua';
item.style.marginRight = '5px';
})
</script>
</body>
</html>关于html - 希望 Nav-Item 与 Nav-Bar 高度相同，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59536189/