twitter-bootstrap - 引导程序中对块引用的 bg-faded 效果

问题描述

我正在尝试在部分 class="content" id="testtimonals" 中使用“bg-faded”作为褪色背景，但它在页面上没有显示效果。

<!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, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <link rel="stylesheet" href="css/bootstrap.min.css">
  <title>Bootstrap</title>
</head>
<body>
  <div class="container">
  
    <section class="content" id="services">
      <h2 class="text-danger">Our Mission</h2>
      <p class="bg-danger text-white">Wisdom Pet Medicine strives to blend the best in traditional and alternative medicine in the diagnosis and treatment of companion animals including dogs, cats, birds, reptiles, rodents, and fish. We apply the wisdom garnered in the centuries old tradition of veterinary medicine, to find the safest treatments and cures.</p>
    
      <ul>
        <li><a href="#">Grooming</a></li>
        <li><a href="#">General Health</a></li>
        <li><a href="#">Nutrition</a></li>
        <li><a href="#">Pest Control</a></li>
        <li><a href="#">Vaccinations</a></li>
      </ul>
    
    </section>
    
    <section class="content" id="testimonials">
      <h2>Testimonials</h2>
    
      <blockquote class="blockquote bg-faded text-info">
        During the summer, our rabbit, Tonto, began to have severe redness and itching on his belly and feet. I'm very thankful to the veterinarians and staff at Wisdom for the excellent care Tonto received, and for nipping his allergies in the bud, so to speak.
        <div class="blockquote-footer">
          Jane
        </div>
      </blockquote>
    </section>
  
  </div><!-- content container -->
  
  <script src="js/jquery.slim.min.js"></script>
  <script src="js/popper.min.js"></script>
  <script src="js/bootstrap.min.js"></script>
</body>
</html>

请有人告诉我为什么它不起作用

标签： twitter-bootstrapbootstrap-4

简短的回答：

替换.bg-faded为.bg-light，您的代码将正常工作，如this fiddle所示。

详细回答：

.bg-faded来自Bootstrap的过时alpha 版本：

由于我猜您使用的是 Bootstrap 的 alpha 版本，因此我建议您参考当前的 v4.5 文档，其中.bg-faded已替换为.bg-light：

twitter-bootstrap - 引导程序中对块引用的 bg-faded 效果

问题描述

解决方案

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