Thanks to the folks over at the Onion for the following. It’s pretty accurate actually.
.onion_embed {background: rgb(256, 256, 256) !important;border: 4px solid rgb(65, 160, 65);border-width: 4px 0 1px 0;margin: 10px 30px !important;padding: 5px;overflow: hidden !important;zoom: 1;}.onion_embed img {border: 0 !important;}.onion_embed a {display: inline;}.onion_embed a.img {float: left !important;margin: 0 5px 0 0 !important;width: 66px;display: block;overflow: hidden !important;}.onion_embed a.img img {border: 1px solid #222 !important;;width: 64px;;padding: 0 !important;;}.onion_embed h2 {line-height: 2px;;clear: none;;margin: 0 !important;padding: 0 !important;}.onion_embed h3 {line-height: 16px;font: bold 16px arial, sans-serif !important;margin: 3px 0 0 0 !important;padding: 0 !important;}.onion_embed h3 a {line-height: 16px !important;;color: rgb(0, 51, 102) !important;font: bold 16px arial, sans-serif !important;text-decoration: none !important;display: inline !important;;float: none !important;;text-transform: capitalize !important;}.onion_embed h3 a:hover {text-decoration: underline !important;color: rgb(204, 51, 51) !important;}.onion_embed p {color: #000 !important;;font: normal 11px/ 11px arial, sans-serif !important;;margin: 2px 0 0 0 !important;;padding: 0 !important;}.onion_embed a {display: inline !important;;float: none !important;}