prefixedCSSValue = function(prop, value) {
    var result = false;
    var elem = createElement('div');
    var style = elem.style;

    if (prop in style) {
      var i = domPrefixes.length;

      style[prop] = value;
      result = style[prop];

      while (i-- && !result) {
        style[prop] = '-' + domPrefixes[i] + '-' + value;
        result = style[prop];
      }
    }

    if (result === '') {
      result = false;
    }

    return result;
  }
prefixedCSSValue is a way test for prefixed css properties (e.g. display: -webkit-flex)

@memberOf Modernizr
@name Modernizr.prefixedCSSValue
@optionName Modernizr.prefixedCSSValue()
@optionProp prefixedCSSValue
@access public
@function prefixedCSSValue
@param {string} prop - String name of the property to test for
@param {string} value - String value of the non prefixed version of the value you want to test for
@returns {string|boolean} The string representing the (possibly prefixed)
valid version of the property, or `false` when it is unsupported.
@example

`Modernizr.prefixedCSSValue` is a way test for prefixed css properties (e.g. display: -webkit-flex)

```js
Modernizr.prefixedCSSValue('background', 'linear-gradient(left, red, red)')
```