为什么轮播在最后一张幻灯片后消失了？

Question

我正在练习 bootstrap，当我在最后一张幻灯片后单击时，整个轮播消失了。即使在第一张幻灯片上，当我单击向左箭头转到最后一张幻灯片时，整个内容仍然消失了。

<!-- Team Pictures Carousel -->
    <div class="row bg-dark rounded-bottom">
      <div class="col">
        <!-- Carousel Component -->
        <div id="carouselExampleControls" class="carousel slide w-50 mx-auto" data-ride="carousel">
          <div class="carousel-inner">
            <div class="carousel-item active">
              <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/brian.png" class="d-block w-100" alt="some guy named brian">
              <div class="carousel-caption bg-dark rounded-pill py-0">
                <p class="text-center font-weight-bold mb-0">CEO: <span class="font-weight-light">Brian M.</span></p>
              </div>
            </div>
            <div class="carousel-item">
              <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/andy.png" class="d-block w-100" alt="another dude named andy">
              <div class="carousel-caption bg-dark rounded-pill py-0">
                <p class="text-center font-weight-bold mb-0">CFO: <span class="font-weight-light"> Andy C.</span></p>
              </div>
            </div>
            <div class="carousel-item">
              <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/angela.png" class="d-block w-100" alt="angela?">
              <div class="carousel-caption bg-dark rounded-pill py-0">
                <p class="text-center font-weight-bold mb-0">COO: <span class="font-weight-light">Angela W.</span></p>
              </div>
            <div class="carousel-item">
              <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/amie.png" class="d-block w-100" alt="amie or amy?">
              <div class="carousel-caption bg-dark rounded-pill py-0">
                <p class="text-center font-weight-bold mb-0">CTO: <span class="font-weight-light">Amie S.</span></p>
              </div>
            </div>
          </div>
          <a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
          </a>
          <a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
          </a>
        </div>
      </div>
    </div>
    
  </div>

Answer 1

带有“COO”的项目缺少关闭标签，因此“carousel-inner”div 在错误的位置关闭。这很好用：

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
<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@4.6.0/dist/js/bootstrap.bundle.min.js" integrity="sha384-Piv4xVNRyMGpqkS2by6br4gNJ7DXjqk09RmUpJ8jgGtD7zP9yug3goQfGII0yAns" crossorigin="anonymous"></script>
<div class="row bg-dark rounded-bottom">
  <div class="col">
    <!-- Carousel Component -->
    <div id="carouselExampleControls" class="carousel slide w-50 mx-auto" data-ride="carousel">
      <div class="carousel-inner">
        <div class="carousel-item active">
          <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/brian.png" class="d-block w-100" alt="some guy named brian">
          <div class="carousel-caption bg-dark rounded-pill py-0">
            <p class="text-center font-weight-bold mb-0">CEO: <span class="font-weight-light">Brian M.</span></p>
          </div>
        </div>
        <div class="carousel-item">
          <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/andy.png" class="d-block w-100" alt="another dude named andy">
          <div class="carousel-caption bg-dark rounded-pill py-0">
            <p class="text-center font-weight-bold mb-0">CFO: <span class="font-weight-light"> Andy C.</span></p>
          </div>
        </div>
        <div class="carousel-item">
          <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/angela.png" class="d-block w-100" alt="angela?">
          <div class="carousel-caption bg-dark rounded-pill py-0">
            <p class="text-center font-weight-bold mb-0">COO: <span class="font-weight-light">Angela W.</span></p>
          </div>
        </div>
        <div class="carousel-item">
          <img src="https://content.codecademy.com/courses/learn-bootstrap-4/adhoc/amie.png" class="d-block w-100" alt="amie or amy?">
          <div class="carousel-caption bg-dark rounded-pill py-0">
            <p class="text-center font-weight-bold mb-0">CTO: <span class="font-weight-light">Amie S.</span></p>
          </div>
        </div>
      </div>
      <a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
        <span class="carousel-control-prev-icon" aria-hidden="true"></span>
        <span class="sr-only">Previous</span>
      </a>
      <a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
      </a>
    </div>
  </div>
</div>

为什么轮播在最后一张幻灯片后消失了？

Why does the carousel dissappear after the last last slide?

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