.imageGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));grid-gap:20px}.imageCard{position:relative;overflow:hidden}.smallImage{width:100%;height:auto}.imageCaption{position:absolute;bottom:0;left:0;width:100%;background-color:rgba(0,0,0,.7);color:#fff;padding:5px;text-align:center}