function supportCss3(style) {
    var prefix = ['webkit', 'Moz', 'ms', 'o'],
        humpString = [],
        htmlStyle = document.documentElement.style,
        _toHumb = function (string) {
            return string.replace(/-(\w)/g, function ($0, $1) {
                return $1.toUpperCase();
            });
        };

    for ( var i in prefix ) {
        humpString.push(_toHumb(prefix[i] + '-' + style));
    }

    humpString.push(_toHumb(style));

    for ( var i in humpString ) {
        if ( humpString[i] in htmlStyle ) return true;
    }

    return false;
}

(function ($) {
    if ( !supportCss3('flex-direction') ) {
        var fontSize = parseFloat($('.wpkj-section>.wpkj-container>.wpkj-row').css('font-size'));
        $('.wpkj-section>.wpkj-container>.wpkj-row>*').css('font-size', fontSize);
        $('html').addClass('no-flex');
    }
})(jQuery);