.tiles {
    display:flex;
    justify-content: space-around;
}

.tile {
    width: 300px;
    height: 300px;
    overflow: hidden;
    position: relative;
    border-radius: 8px;
    border: 3px solid rgba(0, 0, 0, 0.539);
    background-color:  rgba(0, 0, 0, 0.539);
}

.img-wrapper {
    width: 100%;
    height: 100%;
    background-position: center;
    border-radius: 8px;
    background-size: cover;
}

.img-1 {
    background-image: 
    url(https://media.giphy.com/media/lobRpLsXzHAnQGTn9n/giphy.gif);
}

.img-2 {
    background-image: 
    url(https://media.giphy.com/media/xT1XGw9YcAQW36LAL6/giphy.gif);
}

.img-3 {
    background-image: 
    url(https://media.giphy.com/media/CbIpth5kgkjqOfniBG/giphy.gif);
}

.caption {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 300px;
    transition: top 0.6s;
    background-color: rgba(0,0,0,0.6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-family: comfortaa, sans-serif, Arial, Helvetica, sans-serif;
    text-align: center;
    border-radius: 8px;
}

.tile:hover .caption {
    top: 0;
}