style.css

body {
  background-color: #222;
  color: #fff;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.container {
  max-width: 600px;
  width: 100%;
  padding: 40px;
  text-align: center;
}

h1 {
  font-size: 28px;
  margin-bottom: 30px;
}

form {
  margin-bottom: 30px;
}

input[type="text"] {
  padding: 10px;
  font-size: 16px;
  width: 100%;
  border: none;
  background-color: #333;
  color: #fff;
  border-radius: 4px;
  margin-bottom: 10px;
  box-sizing: border-box;
}

button[type="submit"] {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button[type="submit"]:hover {
  background-color: #0056b3;
}

#qr_image img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 10px;
}

.download-button {
  display: inline-block;
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 10px;
}

.download-button:hover {
  background-color: #0056b3;
}

#download_links {
  display: none;
}

.footer {
  margin-top: 30px;
  font-size: 14px;
  text-align: center;
}

.footer a {
  color: #fff;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}