如何在响应式视频上垂直居中文本

Question

出于某种原因，这让我很困惑，找不到可靠的答案。

我有一个在后台播放的视频，该视频全角播放并且响应屏幕尺寸。我对视频有一个 title/text。但我一辈子都想不出如何以响应方式将这段文字垂直居中放置在视频中！感谢您的帮助！

代码笔：

html:

<body>
  <div class="header-container">
    <div class="video-container">
      <video preload="true" autoplay="autoplay" loop="loop" volume="0">
            <source src="https://originate-v3-prod.s3.amazonaws.com/sites/53854785dc60d94b96000002/pages/53854785dc60d94b96000004/files/Originate_B_W_Small6.mp4" type="video/mp4">
        </video>
    </div> <!-- video-container -->
    <h3>Centered Title</h3>
    <h6>This should be vertically and horizontally centered</h6>
  </div> <!-- header-container -->
</body>

css:

.header-container {
  width: 100%;
  height: 100vh;
  position: relative;
  padding: 1px;
}

.video-container {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

video {
  position: absolute;
  z-index: -100;
  width: 100%;
}

h3,
h6 {
  text-align: center;
  color: white;
}

拉入这个 css:

https://maxcdn.bootstrapcdn.com/bootswatch/3.3.6/cyborg/bootstrap.min.css

Answer 1

将包装器显示为 display: table，将子元素更改为 display: table-cell、vertiacl-align: middle. http://codepen.io/anon/pen/ZWwLPP

Answer 2

将 header 容器模拟为 table 并将 h3、h6 模拟为 table-cell 和 vertical-align:middle

.header-container {
  width: 100%;
  height: 100vh;
  position: relative;
  padding: 1px;
  display:table;
}

.video-container {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  height: 100%;
  width: 100%;
  overflow: hidden;

}

video {
  position: absolute;
  z-index: -100;
  width: 100%;
}

h3,
h6 {
  display:table-cell;
  vertical-align:middle;
  text-align: center;
  color: white;
}

<body>
  <div class="header-container">
    <div class="video-container">
      <video preload="true" autoplay="autoplay" loop="loop" volume="0">
            <source src="https://originate-v3-prod.s3.amazonaws.com/sites/53854785dc60d94b96000002/pages/53854785dc60d94b96000004/files/Originate_B_W_Small6.mp4" type="video/mp4">
        </video>
    </div>
    <!-- video-container -->
    <h3>Centered Title</h3>
    <h6>This should be vertically and horizontally centered</h6>
  </div>
  <!-- header-container -->
</body>

Answer 3

我找到并分叉了这个 CodePen。这是我找到的最佳解决方案。（使用 Bootstrap。）

http://codepen.io/149203/pen/JXxbEL

HTML

<div class="row">
  <div class="col-xs-12 vert-center-container">
    <video autoplay loop style="width:100%" class="img-responsive">
      <source src="https://originate-v3-prod.s3.amazonaws.com/sites/53854785dc60d94b96000002/pages/53854785dc60d94b96000004/files/Originate_B_W_Small6.mp4" />
    </video>
    <div class="vert-center-text">
      <h1>Caption Text</h1>
    </div>
  </div>  
</div>

CSS

.vert-center-text {
   position: absolute; 
   top: 40%; 
   left: 0;
   text-align: center; 
   width: 100%; 
}

.vert-center-text h1 { 
    color: white;
}

.vert-center-container {
  position:relative;
}

如何在响应式视频上垂直居中文本

How To Vertically Center Text Over Responsive Video

html

javascript

css

jquery

html5-video

代码笔：

html:

css:

拉入这个 css: