.thumbnail-viewer-overall {
    background-color: rgba(0, 0, 0, 0.9);
    font-family: helvetica, arial, verdana;
}
.thumbnail-viewer-close {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 10px;
    color: #ffffff;
    font-size: 12px;
    text-decoration: none;
}
.thumbnail-viewer-close:hover {
    background-color: rgba(0, 0, 0, 0.7);
    text-decoration: underline;
}

.thumbnail-viewer {
  display: inline-block;
  vertical-align: middle;
}