.radioactivity-gauge{width:16px;height:16px;display:block;background:transparent url(/profiles/dwyer/modules/contrib/radioactivity/images/gauge.png) repeat-y 0 0}.radioactivity-gauge.lvl-3{background-position:0 0}.radioactivity-gauge.lvl-2{background-position:-16px 0}.radioactivity-gauge.lvl-1{background-position:-32px 0}.radioactivity-history{height:100px;width:100%}