html - Flexbox layout does not work in Internet Explorer 10

Question

http://jsfiddle.net/J8rL7/87/

According to http://caniuse.com/#feat=flexbox

It should work for IE10 with vendor-prefix.

But it does not!

UPDATE: And I just checked in latest Firefox it looks totally broken.

Why?

<div id="wrapper" style="margin:auto;background-color:yellow;height:100%;">
    <div style="width:50px;height:100%;">
        <div class="fluid-column" style="height:80%;background-color:green;">
            <div class="box" style="background-color:#ff99cc;height:25%;">1</div>
            <div class="box" style="background-color:#ff33cc;height:50%;">2</div>
            <div class="box" style="background-color:#ff66cc;height:25%;">3</div> 
        </div>   
        <div class="fix-column" style="height:20%;background-color:violet">
            <div class="box" style="background-color:orange;height:50%;">Total</div>
            <div class="box" style="background-color:blue;height:50%;">Test</div>
        </div>
    </div>
</div>

body, html{
    width:100%;
    height:100%;
    margin:0;
    padding:0;
}

div{
    text-align:center;
   }

.box
{
    display:-webkit-box;-webkit-box-pack:center;-webkit-box-align:center;
    display:-ms-box;-ms-box-pack:center;-ms-box-align:center;
    display:-moz-box;-moz-box-pack:center;-moz-box-align:center;
}

Answer 1

You need to read the notes very closely on caniuse. "Partial support" refers to supporting one of two older drafts, and they don't make a note of which browser supports which draft. IE10 supports the March 2012 draft, and it's the only one that's known to do so.

http://codepen.io/cimmanon/pen/ApHEy

.box {
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -moz-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -moz-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
  /* fix for old FF */
  width: 100%;
}