body {
      font-family: sans-serif;
      background-image:url(background.jpg);
      color: white;
      text-align: center;
      padding: 20px;
    }
    .cards {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      margin: 10px;
    }
    .card {
      margin: 5px;
      border-radius: 6px;
      box-shadow: 0 0 5px black;
    }
    button {
      padding: 10px 20px;
      margin: 10px;
      font-size: 16px;
      border-radius: 6px;
      border: none;
      cursor: pointer;
    }
    button:hover {
      background-color: #fff;
      color: #0b3d91;
    }