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<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Bootstrap 实例 - 按钮</title> <!-- Bootstrap --> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"> </head> <body> <div class="container"> <p> <button type="button" class="btn btn-primary btn-lg">大的原始按钮</button> <button type="button" class="btn btn-default btn-lg">大的按钮</button> </p> <p> <button type="button" class="btn btn-primary"> 默认大小的原始按钮</button> <button type="button" class="btn btn-default"> 默认大小的按钮</button> </p> <p> <button type="button" class="btn btn-primary btn-sm">小的原始按钮</button> <button type="button" class="btn btn-default btn-sm">小的按钮</button> </p> <p> <button type="button" class="btn btn-primary btn-xs">特别小的原始按钮</button> <button type="button" class="btn btn-default btn-xs">特别小的按钮</button> </p> <p> <button type="button" class="btn btn-primary btn-lg btn-block">块级的原始按钮</button> <button type="button" class="btn btn-default btn-lg btn-block">块级的按钮</button> </p> </div> <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script> </body> </html>
运行结果：