Si+vs+P

media type="custom" key="8928234"[| .prezi-player { width: 550px; } .prezi-player-links { text-align: center; }  Best Element in the World Contest on Prezi]

.prezi-player { width: 550px; } .prezi-player-links { text-align: center; } <param name="allowscriptaccess" value="always"/><param name="bgcolor" value="#ffffff"/><param name="flashvars" value="prezi_id=nwfwnk7gbmvw&amp;lock_to_path=0&amp;color=ffffff&amp;autoplay=no&amp;autohide_ctrls=0"/><embed id="preziEmbed_nwfwnk7gbmvw" name="preziEmbed_nwfwnk7gbmvw" src=" http://prezi.com/bin/preziloader.swf " type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="550" height="400" bgcolor="#ffffff" flashvars="prezi_id=nwfwnk7gbmvw&amp;lock_to_path=0&amp;color=ffffff&amp;autoplay=no&amp;autohide_ctrls=0"> Phosphorus Dominates All Elements</a> on Prezi</a>