<!DOCTYPE html>
<html>
<head>
<title>Package File Browser</title>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<style>
body {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  margin: 2rem;
  max-width: 800px;
  margin: 0 auto;
}
input, textarea {
  font-size: 16px;
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.5rem;
  box-sizing: border-box;
}
#fileList, #fileContent {
  border: 1px solid #ddd;
  padding: 1rem;
  margin-top: 1rem;
}
pre {
  whi