body {
}

.thumbnail {
    display: block;
    padding: 4px;
    margin-bottom: 20px;
    line-height: 1.428571429;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

    .thumbnail > img, .thumbnail a > img {
        display: block;
        max-width: 100%;
        height: auto;
        margin-right: auto;
        margin-left: auto;
    }

a.thumbnail:hover, a.thumbnail:focus, a.thumbnail.active {
    border-color: #428bca;
}

.thumbnail .caption {
    padding: 9px;
    color: #333;
}