How to use Flexbox to achieve centering effect in CSS

This article mainly introduces examples of Flexbox in CSS to achieve the centering effect. Pay attention to the compatibility issues in IE browsers. Friends in need can refer to it

The future development direction of CSS is to use Flexbox. A design that solves common problems like vertical centering. Please note that Flexbox has more than one way to center. It can also be used to divide columns and solve weird layout problems.

.Center-Container.is-Flexbox {   
  display: -webkit-box;   
  display: -moz-box;   
  display: -ms-flexbox;   
  display: -webkit-flex;   
  display: flex;   
  -webkit-box-align: center;   
     -moz-box-align: center;   
     -ms-flex-align: center;   
  -webkit-align-items: center;   
          align-items: center;   
  -webkit-box-pack: center;   
     -moz-box-pack: center;   
     -ms-flex-pack: center;   
  -webkit-justify-content: center;   
          justify-content: center;   
}

Advantages:

The content can be any height or width, and it will perform well even if it overflows
Can be used for various advanced layout techniques

Also note: IE8-9 is not supported

Need to write styles on the body, or require additional containers
Need various manufacturer prefixes to be compatible with modern browsers
May have potential performance issues

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