css3 闪光hover

.pic{position:relative;}
        .glass{display:block;}
        .glass i{display: block;width: 248px;height: 187px;position: absolute;top:0px;left: 365px;-webkit-transform: skewX(-49deg);
        background: -webkit-linear-gradient(left,rgba(255, 255, 255, 0),rgba(255, 255, 255, 0.7),rgba(255, 255, 255, 0));-webkit-transition: 0s;}
        a:hover .glass i{top:;left:-365px;-webkit-transition:0.5s;}

<a href="" class="pic">
        <div class="glass">
            <img src="http://rs.moxian.com/sz/upload/2013/20130307/5546/201303070430464365_small.jpg" />
            <i></i>
        </div>
    </a>