span.definition{visibility:hidden;display:block;position:absolute;bottom:120%;left:0;width:25em;transition:opacity .5s,bottom .5s;padding:.6em;opacity:0;font-size:.9em;color:#fff;border-radius:.25em;background-color:#000;background:rgba(0,0,0,0.85)}span.definition a{color:#129ad6}span.definition a:hover{color:#0e78a7}span.extra{position:absolute;bottom:100%;left:0;width:20em;visibility:hidden}span.jargon-buster{position:relative;color:#428bca}span.jargon-buster:hover{cursor:help}span.jargon-buster:hover span.definition{visibility:visible;z-index:10;opacity:1;-webkit-backface-visibility:hidden}span.jargon-buster:hover span.extra{position:absolute;bottom:100%;left:0;visibility:visible}span.jargon-buster:hover{text-decoration:underline;color:#2a6496}span.jargon-buster:hover span.definition:after{display:block;content:"";border-color:black transparent transparent transparent;border-color:rgba(0,0,0,0.85) transparent transparent transparent;border-style:solid;border-width:10px;height:0;width:0;position:absolute;bottom:-20px;left:1}