请问为什么将鼠标移到原本看不见的img上,也能触发a的hover事件,使得img显示出来
.ctrl-i img
{
    width: 100%;
    position: absolute;
    left: 0;
    bottom: 50px;
    -webkit-box-reflect: below 0  -webkit-gradient(
    linear,
    left top,
    left bottom,
    from(transparent),
    color-stop(50%,transparent),
    to(rgba(0,0,0,0.8))
    );
    opacity: 0;
    -webkit-transition: all,0.3s;
}
.ctrl-i:hover
{
    background-color: rgba(0,0,0,0.8 );
}
.ctrl-i:hover img
{
    opacity: 1;
    bottom: 13px;
}