.d3-tip{line-height:1;font-weight:bold;padding:12px;background:rgba(0,0,0,0.8);color:#fff;border-radius:2px;pointer-events:none}.d3-tip:after{box-sizing:border-box;display:inline;font-size:10px;width:100%;line-height:1;color:rgba(0,0,0,0.8);position:absolute;pointer-events:none}.d3-tip.n:after{content:"\25BC";margin:-1px 0 0 0;top:100%;left:0;text-align:center}.d3-tip.e:after{content:"\25C0";margin:-4px 0 0 0;top:50%;left:-8px}.d3-tip.s:after{content:"\25B2";margin:0 0 1px 0;top:-8px;left:0;text-align:center}.d3-tip.w:after{content:"\25B6";margin:-4px 0 0 -1px;top:50%;left:100%}