媒体对象

媒体对象是一些抽象元素，是用来建立复杂繁琐组件（比如说博客评论、推文等）的基础。它支持左对齐内容、右对齐内容、内容对齐选项、嵌套，等等。

注意！ 如果启用了弹性盒模式，媒体对象将尽可能地使用flex样式。

默认媒体

默认媒体允许让媒体对象（图片、视频、音频）在内容块中向左浮动或向右浮动。

<div class="media">
  <a class="media-left" href="#">
    <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
  </a>
  <div class="media-body">
    <h4 class="media-heading">Media heading</h4>
    Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
  </div>
</div>

嵌套

媒体组件是可以被嵌套的。

<div class="media">
  <div class="media-left">
    <a href="#">
      <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
    </a>
  </div>
  <div class="media-body">
    <h4 class="media-heading">Media heading</h4>
    Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
    <div class="media">
      <a class="media-left" href="#">
        <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
      </a>
      <div class="media-body">
        <h4 class="media-heading">Nested media heading</h4>
        Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
      </div>
    </div>
  </div>
</div>

对齐

图片或其它媒体对象可以顶部对齐、居中对齐、底部对齐。默认是顶部对齐。

<div class="media">
  <div class="media-left">
    <a href="#">
      <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
    </a>
  </div>
  <div class="media-body">
    <h4 class="media-heading">Top aligned media</h4>
    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
    <p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
  </div>
</div>

<div class="media">
  <div class="media-left media-middle">
    <a href="#">
      <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
    </a>
  </div>
  <div class="media-body">
    <h4 class="media-heading">Middle aligned media</h4>
    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
    <p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
  </div>
</div>

<div class="media">
  <div class="media-left media-bottom">
    <a href="#">
      <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
    </a>
  </div>
  <div class="media-body">
    <h4 class="media-heading">Bottom aligned media</h4>
    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
    <p>Donec sed odio dui. Nullam quis risus eget urna mollis ornare vel eu leo. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
  </div>
</div>

媒体列表

使用一个额外的标签，你就可以在列表中使用媒体（对评论线程或文章列表来说很有用）。

<ul class="media-list">
  <li class="media">
    <div class="media-left">
      <a href="#">
        <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
      </a>
    </div>
    <div class="media-body">
      <h4 class="media-heading">Media heading</h4>
      <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.</p>
      <!-- Nested media object -->
      <div class="media">
        <a class="media-left" href="#">
          <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
        </a>
        <div class="media-body">
          <h4 class="media-heading">Nested media heading</h4>
          Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
          <!-- Nested media object -->
          <div class="media">
            <div class="media-left">
              <a href="#">
                <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
              </a>
            </div>
            <div class="media-body">
              <h4 class="media-heading">Nested media heading</h4>
              Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
            </div>
          </div>
        </div>
      </div>
      <!-- Nested media object -->
      <div class="media">
        <div class="media-left">
          <a href="#">
            <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
          </a>
        </div>
        <div class="media-body">
          <h4 class="media-heading">Nested media heading</h4>
          Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
        </div>
      </div>
    </div>
  </li>
  <li class="media">
    <div class="media-body">
      <h4 class="media-heading">Media heading</h4>
      Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis.
    </div>
    <div class="media-right">
      <a href="#">
        <img class="media-object" data-src="holder.js/64x64" alt="Generic placeholder image">
      </a>
    </div>
  </li>
</ul>