/*http://jsfiddle.net/ZhLk4/1/ */

div.item {
    /* To correctly align image, regardless of content height: */
    vertical-align: top;
    display: inline-block;
    /* To horizontally center images and caption */
    text-align: center;
    /* The width of the container also implies margin around the images. */
    width: 160px;
    padding:10px;
}

.caption {
    /* Make the caption a block so it occupies its own line. */
    display: block;
}