.image-anime{
    position: relative;
    overflow: hidden;
}

.image-anime:after{
    content: "";
    position: absolute;
    width: 200%;
    height: 0;
    left: 50%;
    top: 50%;
    background-color: rgba(255,255,255,.3);
    transform: translate(-50%,-50%) rotate(-45deg);
    z-index: 1;
}

.image-anime:hover:after{
    height: 250%;
    transition: all 600ms linear;
    background-color: transparent;
}