Test flexbox vertical stretch in IE
by gudoy
HTML
<div id="layout">
<div id="b1">1</div>
<div id="b2">2</div>
</div>
CSS
#layout { display:-ms-flexbox; -ms-flex-direction:column; -ms-flex-align:stetch; }
#layout > div { color:#fff; font-size:42px; }
#b1 { background:blue; }
#b2 { -ms-flex:1; background:green; }