body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 0;
    padding: 0;
  }
  
  .container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  }
  
  h1, h2 {
    color: #333;
  }
  
  .upload-section, .audio-list-section {
    margin-bottom: 30px;
  }
  
  form {
    margin-bottom: 20px;
  }
  
  input[type="file"] {
    display: block;
    margin-bottom: 10px;
  }
  
  button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
  }
  
  button:hover {
    background-color: #0056b3;
  }
  
  ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
  }
  
  li {
    margin-bottom: 10px;
  }
  
  audio {
    margin-top: 20px;
  }