body{overflow:auto}.tooltip:after{content:"";position:absolute;top:0;left:50%;margin-left:-10px;margin-top:-20px;border:10px solid transparent;border-bottom-color:hsla(0,0%,100%,.95)}.selection-box{position:absolute;border:1px dashed blue;background:rgba(0,0,255,.1);display:none;z-index:1000;pointer-events:none}