CSS Reflections are a feature of WebKit-based browsers (e.g., Safari and Chrome). If you are using something else (e.g., Firefox or Internet Explorer), you probably won't see anything interesting below.
Mostly, I made this page to test whether this works on iPhone. It does.
Here is the style declaration that produces the effect:
#container img {
-webkit-box-reflect:
below 2px
-webkit-gradient(linear, left top, left bottom,
from(transparent), color-stop(0.5, transparent), to(white));
margin-bottom: 200px;
border: solid 4px #ccc;
}