HTML元素未在Flex中心垂直居中 [英] Html element is not vertically centered with flex center

问题描述

那是我的小提琴： http://jsfiddle.net/atav8vzz/4/

为什么类 vertical-align的html元素未垂直居中？

Why is the html element with class "vertical-align" not vertically centered?

<div class="container">
          <div class="row">
            <div style="background:green;" class="col-xs-4">             
              <h3 class="text-center">Type 1</h3>            

            </div>

            <div style="background:red;" class="col-xs-4">             
              <h3 class="text-center vertical-align">Type 2</h3> 

            </div>

            <div style="background:blue;" class="col-xs-4">            
                <h3 class="text-center">Type 3</h3>            

            </div>
          </div>
        </div>

.vertical-align {
        display: ms-flex;
        display: flex;
        align-items: center;
    }

推荐答案

我想这取决于您试图在这里实现。 align-items 是垂直进行的。在合理化内容的情况下是水平的。

I guess it depends what you're trying to achieve here. align-items does so vertically. Where as justify-content does so horizontally.

请参见此示例。我已给出< h3> 的高度，以说明其垂直居中。

See this example. I have given the <h3> height, to illustrate that it is centred vertically.

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