加上-webkit-grandient的东西后就什么效果都没有了
.slider .ctrl .ctrl-i img{
width: 100%;
position: absolute;
left: 0;
bottom: 13px;
z-index: 1;
-webkit-box-reflect: below 0px
-webkit-gradient(
linear,
left top,
left bottom,
form(transparent),
color-stop(50% , transparent),
to( rgba(225,225,225,0.3))
);
}