Incremental attribution for ads

<div class="lift"><div class="heading">ATTRIBUTED ≠ INCREMENTAL</div><div class="bars"><div><span>NO AD</span><i id="control"></i><b id="cv">40</b></div><div><span>EXPOSED</span><i id="exposed"></i><b id="ev">55</b></div></div><div class="delta">ADDED PURCHASES <strong id="difference">+15</strong></div></div>

.lift{width:min(86%,460px);font:800 clamp(10px,max(2vmin,1vw),16px)/1.2 sans-serif}.heading{border-bottom:2px solid var(--fg);padding-bottom:8px;letter-spacing:.08em}.bars{height:clamp(105px,28vmin,220px);display:flex;align-items:end;justify-content:center;gap:clamp(25px,9vmin,75px);border-bottom:2px solid var(--line);margin-top:clamp(8px,2vmin,18px)}.bars div{height:100%;width:clamp(70px,19vmin,140px);display:flex;flex-direction:column;align-items:center;justify-content:end;gap:5px}.bars span{font-size:max(10px,1vw,.8em);color:var(--muted)}.bars i{display:block;width:100%;background:var(--fg);transition:height .5s}.bars div:last-child i{background:var(--accent)}.bars b{font-size:clamp(15px,3vmin,24px)}.delta{display:flex;justify-content:space-between;align-items:center;gap:5px;margin-top:clamp(10px,3vmin,20px);color:var(--muted)}.delta strong{font-size:clamp(25px,7vmin,55px);color:var(--accent)}

const cases=[[40,55],[42,54],[39,57]];let n=0;function draw(){const [control,exposed]=cases[n++%3];document.querySelector('#control').style.height=control+'%';document.querySelector('#exposed').style.height=exposed+'%';document.querySelector('#cv').textContent=String(control);document.querySelector('#ev').textContent=String(exposed);document.querySelector('#difference').textContent='+'+(exposed-control)}draw();setInterval(draw,1450);