如何在div中居中和垂直对齐文本？

Question

下面的代码垂直对齐div中的文本完全正确,但是当我尝试将其居中时,只有需要包装的文本才会居中.当文本很短时,例如5-6个单词,文本不居中.我不知道这只是我还是我在这里做错了什么.

我正在使用 display: table-cell;垂直对齐.两者div和p元素都以相同的方式在CSS中定义.看看codepen看看问题.

<style>
  .outer { outline: 1px solid #eee; }
  .outer > p { 
    display: table-cell; 
    height: 200px; 
    vertical-align: middle;
    text-align: center;
  }
</style>
<div class="outer">
  <p>
    This longer text will be vertically aligned.
  </p>
</div>
<div class="outer">
  <p>
    This longer text will be vertically aligned and centered. Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
  </p>
</div>

http://codepen.io/anon/pen/vGowKL

Answer 1

.outer >p { 
 display: flex;
 height: 100%;
justify-content: center;
 align-items: center;
}

您可以使用flexbox简化操作.