body{background:#d3d3d3;box-sizing:border-box;font-family:Arial,sans-serif;margin:0;padding:0}h2,h3{margin:20px 0;text-align:center}#latencyChart{border:1px solid #000;border-radius:5px;height:60vh}#controls,#latencyChart{margin:20px auto;width:80%}#controls{align-items:center;display:grid;gap:10px;grid-template-columns:1fr 1fr auto}#controls label{font-weight:700}#statistics{display:grid;gap:2px;grid-template-columns:repeat(4,1fr);margin:2px auto;width:50%}#statistics div{padding:5px;text-align:left}.popup{background-color:#f5f5f5;border:1px solid #000;left:50%;padding:20px;position:fixed;text-align:center;top:50%;transform:translate(-50%,-50%);z-index:1000}.popup-content table{margin:auto;text-align:left;width:70%}.popup-content form{text-align:center}.popup-content button{margin-left:5px;margin-right:5px;margin-top:15px}