要在Bootstrap 4的卡标题内设置导航药丸的样式，请使用如下所示的card-header-pills类和减号；
<ul class="nav nav-pills card-header-pills">
在Bootstrap的标头类中设置导航药丸-
<div class="card-header"> <ul class="nav nav-pills card-header-pills"> <li class="nav-item"> <a class="nav-link active" href="#">Clothing</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Electronics</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Mobile Accessories</a> </li> </ul> </div>
您可以尝试运行以下代码以在Bootstrap 4中实现card-header-pills类-
<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Products</h2> <div class="card"> <div class="card-header"> <ul class="nav nav-pills card-header-pills"> <li class="nav-item"> <a class="nav-link active" href="#">Clothing</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Electronics</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Mobile Accessories</a> </li> </ul> </div> <div class="card-body"> <h5 class="card-title">Clothing</h5> <p class="card-text">We have Men and Women clothing line...</p> </div> </div> </div> </body> </html>