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媒体对象（Media object）

Bootstrap媒体对象的文档和示例，用于构建高度重复的组件，如博客评论、推文等。

一、Example

媒体对象有助于构建复杂和重复的组件，其中一些媒体与不围绕所述媒体的内容放在一起。此外，由于flexbox，它只需要两个必需的类就可以做到这一点。

下面是一个单一媒体对象的示例。只需要两个类——内容周围的.media和.media-body 正文。可选的填充和边距可以通过间距实用程序进行控制。

<!--Example-->
<div class="media"><img src="../images/2.jpg" class="mr-3" alt="..."><div class="media-body"><h5 class="mt-0">Media heading</h5><p>Will you do the same for me? It's time to face the music I'm no longer your muse. Heard it's beautiful, be the judge and my girls gonna take a vote. I can feel a phoenix inside of me. Heaven is jealous of our love, angels are crying from up above. Yeah, you take me to utopia.</p></div>
</div>

页面展示效果：

二、Nesting 嵌套

媒体对象可以无限嵌套，但我们建议您在某个时候停止。将嵌套的.media放入父媒体对象的.media-body 正文中。

<!--嵌套 Nesting-->
<div class="media"><img src="../images/a1.jpg" class="mr-3" alt="..."><div class="media-body"><h5 class="mt-0">Media heading</h5><p>Standing on the frontline when the bombs start to fall. Heaven is jealous of our love, angels are crying from up above. Can't replace you with a million rings. Boy, when you're with me I'll give you a taste. There’s no going back. Before you met me I was alright but things were kinda heavy. Heavy is the head that wears the crown.</p><div class="media mt-3"><a class="mr-3" href="#"><img src="../images/1.jpg" class="mr-3" alt="..."></a><div class="media-body"><h5 class="mt-0">Media heading</h5><p>Greetings loved ones let's take a journey. Yes, we make angels cry, raining down on earth from up above. Give you something good to celebrate. I used to bite my tongue and hold my breath. I'm ma get your heart racing in my skin-tight jeans. As I march alone to a different beat. Summer after high school when we first met. You're so hypnotizing, could you be the devil? Could you be an angel? It's time to bring out the big balloons. Thought that I was the exception. Bikinis, zucchinis, Martinis, no weenies.</p></div></div></div>
</div>

页面展示效果：

三、Alignment 对齐

媒体对象中的媒体可以与flexbox实用程序对齐到.Media-body 正文内容的顶部（默认）、中间或末尾。

• 顶部（默认）对齐方式：

<div class="media"><img src="..." class="align-self-start mr-3" alt="..."><div class="media-body"><h5 class="mt-0">Top-aligned media</h5><p>I’m gon’ put her in a coma. You give a hundred reasons why, and you say you're really gonna try. So I sat quietly, agreed politely. Suiting up for my crowning battle. And on my 18th Birthday we got matching tattoos. So très chic, yeah, she's a classic. I am ready for the road less traveled.</p><p>I'm walking on air (tonight). But down to earth. You're original, cannot be replaced. But in another life I would be your girl. We drove to Cali and got drunk on the beach. We can dance, until we die, you and I, will be young forever. Saw you downtown singing the Blues.</p></div>
</div>

页面展示效果：

• 中间对齐方式：

<div class="media"><img src="..." class="align-self-center mr-3" alt="..."><div class="media-body"><h5 class="mt-0">Center-aligned media</h5><p>She'll turn cold as a freezer. At the eh-end of it all. Stinging like a bee I earned my stripes. Bikinis, zucchinis, Martinis, no weenies. I hope you got a healthy appetite. We can dance, until we die, you and I, will be young forever. We're living the life. We're doing it right. Word on the street, you got somethin' to show me, me.</p><p class="mb-0">Wanna see the show in 3D, a movie. They say, be afraid you're not like the others, futuristic lover. Open up your heart. So I sat quietly, agreed politely. Last Friday night. Yeah, you're lucky if you're on her plane. I'll be your gift, give you something good to celebrate.</p></div>
</div>

页面展示效果：

• 末尾对齐方式：

<div class="media"><img src="..." class="align-self-end mr-3" alt="..."><div class="media-body"><h5 class="mt-0">Bottom-aligned media</h5><p>Come on, let your colours burst. I can feel this light that's inside of me. All night they're playing, your song. From Tokyo to Mexico, to Rio. There’s no going back. But down to earth. Magical, colorful, Mr. Mystery, ee. Different DNA, they don't understand you.</p><p class="mb-0">But down to earth. She's got that, je ne sais quoi, you know it. I can see the writing on the wall. The boys break their necks try'na to creep a little sneak peek. Take me, ta-ta-take me. Open up your heart. Thought that I was the exception. Boom, boom, boom. Venice beach and Palm Springs, summertime is everything. Bring the beat back. (This is how we do)</p></div>
</div>

页面展示效果：

四、Order 顺序

通过修改HTML本身或添加一些自定义的flexbox CSS来设置order属性（为您选择的整数），从而更改媒体对象中内容的顺序。

<!--Order-->
<div class="media"><div class="media-body"><h5 class="mt-0 mb-1">Media object</h5><p>I know there will be sacrifice but that's the price. Are you brave enough to let me see your peacock? Be your teenage dream tonight. Uh-huh, I see you. There’s no going back. Yeah, we maxed our credit cards and got kicked out of the bar. So let me get you in your birthday suit. You may fall in love when you meet her. Had the world in the palm of your hands. Don't let the greatness get you down, oh, oh yeah. Now we talking astrology, getting our nails did, all Japanese-y. Make me your Aphrodite.</p></div><img src="../images/2.jpg" class="ml-3" alt="...">
</div>

页面展示效果：

五、Media list 媒体列表

因为媒体对象的结构要求很少，所以您也可以在列表HTML元素上使用这些类。在您的<ul>或<ol>上，添加未设置样式的.list-unstyled 以删除任何浏览器默认列表样式，然后将.media应用于您的<li>s。与往常一样，在需要微调的地方使用间距实用程序。

<!--Media list-->
<ul class="list-unstyled"><li class="media"><img src="../images/2.jpg" class="mr-3" alt="..."><div class="media-body"><h5 class="mt-0 mb-1">List-based media object</h5><p>All my girls vintage Chanel baby. So you can have your cake. Tonight, tonight, tonight, I'm walking on air. Slowly swallowing down my fear, yeah yeah. Growing fast into a bolt of lightning. So hot and heavy, 'Til dawn. That fairy tale ending with a knight in shining armor. Heavy is the head that wears the crown.</p></div></li><li class="media my-4"><img src="../images/a1.jpg" class="mr-3" alt="..."><div class="media-body"><h5 class="mt-0 mb-1">List-based media object</h5><p>Maybe a reason why all the doors are closed. Cause once you’re mine, once you’re mine. Be your teenage dream tonight. Heavy is the head that wears the crown. It's not even a holiday, nothing to celebrate. A perfect storm, perfect storm.</p></div></li><li class="media"><img src="../images/1.jpg" class="mr-3" alt="..."><div class="media-body"><h5 class="mt-0 mb-1">List-based media object</h5><p>Are you brave enough to let me see your peacock? There’s no going back. This is the last time you say, after the last line you break. At the eh-end of it all.</p></div></li>
</ul>

页面展示效果：