Featherlight is a very lightweight jQuery lightbox.
Featherlight
is very, very lightweight. 400 lines of JavaScript, 100 of CSS, less than 6kB combined.
Getting Started:
All styling is done using CSS so you'll want to include the Featherlight CSS in your head.
<link href="//cdn.rawgit.com/noelboss/featherlight/1.0.3/release/featherlight.min.css" type="text/css" rel="stylesheet" title="Featherlight Styles" />