<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Application Shell</title>
</head>
<body style="box-sizing: content-box; margin-inline: auto; max-inline-size: 60vw; margin-top: 10vh;">
  <style>
    .dialog__backdrop {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background-color: rgba(0, 0, 0, 0.5); /* semi-transparent black */
      display: flex;
      just