body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
    text-align: center;
    overflow: hidden;
    position: relative;
    background-color: white;
    color: black;
  }
  
  select {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 10px;
    font-size: 16px;
    z-index: 100;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, top 0.3s ease;
  }
  
  select.top {
    top: -30px;
    transform: translate(-50%, 0);
  }
  
  select.expanded {
    top: 10px;
  }
  
  iframe {
    width: 100%;
    height: 100vh;
    border: none;
  }
  
  @media (prefers-color-scheme: dark) {
    body {
      background-color: #1e1e1e;
      color: white;
    }
  
    select {
      background-color: #1e1e1e;
      color: white;
      border-color: #444;
    }
  }