public/chartcss/linechart.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}#sonic{width:25px;height:25px;text-align:center;background-color:red;color:#fff;font-size:11px;border-radius:50%;display:inline-block;margin-right:10px;background-image:url("https://interactive.guim.co.uk/embed/aus/graphics/sonification/audio.svg");background-size:90%;bacground-position:center middle}#sonic{width:20px;height:20px;text-align:center;background-color:#b3b2b2;color:#fff;font-size:11px;border-radius:50%;margin-top:0px;display:inline-block;margin-right:10px;background-image:url("https://interactive.guim.co.uk/embed/aus/graphics/sonification/audio.svg");background-size:90%;background-position:center;z-index:99;cursor:pointer;border-color:none;border-style:none;border:none;cursor:pointer}