I used a background image css option on checkboxes to show an image. However, I would like to make the image clickable with a link. That way they can see the full size of the image. And the image must open in a separate window.

CSS listed below.

#Field11-0 + label {
    background-image: url("url_here");
    background-size: 100% 100% !important;
    background-repeat: no-repeat;
    height: 234px !important;
    width: 348px !important;
      color:rgba(0, 0, 0, 0.0);
  a href="default.asp"
}