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法律研究Bootstrap 4 .justify-content-*-center 类
在不同的屏幕尺寸上使用 Bootstrap 4 中的 justify-content-*-center 类使内容居中。
对于不同的屏幕尺寸，
justify-content-sm-center: Small Screen Size justify-content-md-center: Medium Screen Size justify-content-lg-center: Large Screen Size justify-content-xl-center: Extra Large Screen Size
让我们看看如何实现 justify-content-*-center 类，
示例
<!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://ajax.googleapis.com/ajax/libs/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 mt-3"> <h3>Vehicle</h3> <div class="d-flex justify-content-sm-center bg-warning mb-5"> <div class="p-2 bg-danger">Car</div> <div class="p-2 bg-info">Bike</div> <div class="p-2 bg-secondary">Truck</div> </div> <div class="d-flex justify-content-md-center bg-warning mb-5"> <div class="p-2 bg-danger">Car</div> <div class="p-2 bg-info">Bike</div> <div class="p-2 bg-secondary">Truck</div> </div> <div class="d-flex justify-content-lg-center bg-warning mb-5"> <div class="p-2 bg-danger">Car</div> <div class="p-2 bg-info">Bike</div> <div class="p-2 bg-secondary">Truck</div> </div> <div class="d-flex justify-content-xl-center bg-warning mb-5"> <div class="p-2 bg-danger">Car</div> <div class="p-2 bg-info">Bike</div> <div class="p-2 bg-secondary">Truck</div> </div> </div> </body> </html>
更新于：18 年 6 月 20 日
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