.overlay {
    position:absolute;
    top:160px;
    left:0;
    bottom:0;
    background-color:rgba(0,0,0,0.4);
    right:0;
    transition:all 400ms ease;
    color: white;
    overflow: hidden;
    margin-left: 16px;
    margin-right: 16px;
    margin-bottom: 31px;
    text-align: center;
}

.overlay:hover  {
    top: 0;
    transition:top 200ms linear;
    background-color:rgba(0,0,0,0.6);
}
.overlay div{
    display: table;
    width: 100%;
    height: 100%;
}
.overlay div h5{
    display: table-cell;
    vertical-align: middle;
    line-height: 40px;
    padding-left: 5px;
    padding-right: 5px;
}
.overlay:hover div h5{
    line-height: 30px;
}