body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  padding: 20px;
}
.box {
  background: #fff;
  border-radius: 10px;
  max-width: 800px;
  margin: auto;
  padding: 20px;
  box-shadow: 0 0 8px #ccc;
}
h1 {
  text-align: center;
  color: #007BFF;
}
.item {
  margin-bottom: 20px;
}
audio {
  width: 100%;
}
.note {
  text-align: center;
  color: red;
  font-weight: bold;
}