#image_big {
    position: absolute;
    height: 80vh;
    width: 75vw;
    top: 12vh;
    left: 5vw;
}

#big_image_caption {
    font-size: 1.25em;
    text-align:center;
    position: absolute;
    bottom: 1vh;
    width: 95vw;
}

figcaption {
    color:black;
}