body {
  font-family: Arial, sans-serif;
  background: #f7f7f7;
  text-align: center;
  padding: 20px;
}

input {
  width: 80%;
  padding: 10px;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
  background: #2563eb;
  color: white;
  border: none;
  cursor: pointer;
}

#qr-canvas {
  display: block;
  margin: 20px auto;
  border: 1px solid #ddd;
  background: #fff;
}

canvas {
  margin-top: 20px;
}

.ad {
  margin: 30px auto;
  max-width: 728px;
}
.ad-label {
  font-size: 12px;
  color: #999;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background: #2563eb;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
}

#download,
#download-svg {
  display: none;
  margin: 10px 5px;
  padding: 10px 20px;
  background: #2563eb;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 14px;
}

ul {
  list-style-type: none;
}