public/chartcss/_tooltip.css

.tooltip{position:absolute !important;width:150px;pointer-events:none;background-color:#fff;border:1px;border-color:#000;border-style:solid;padding:10px;font-family:"Guardian Text Sans Web","Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:12px;line-height:14px}