body,
  html {
      margin: 0;
      padding: 0;
      font-family: sans-serif;
     background-image: url('../image/ccc.webp');
     background-repeat: no-repeat;
     background-size: 100%  100%;
      display: flex;
      flex-direction: column
  }

  .container {
      flex: 1;
      padding: 0px;
      display: flex;
      justify-content: center;
      align-items: flex-start;
      position: relative
  }

  #quizBox {
      background: #ffffff62;
      padding: 30px;
      border-radius: 8px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      width: 100%;
      max-width: 700px
  }

  footer {
      background: #007BFF;
      color: #fff;
      padding: 10px;
      text-align: center;
      margin-top: auto
  }

  .header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px
  }

  .header h2 {
      margin: 0;
      color: #ffffff
  }

  #timer {
      font-family: monospace;
      font-size: 25px;
      color: #3835dc;
      font-weight: 400
  }

  .question {
      font-size: 1.1em;
      margin-bottom: 15px
  }

  .options {
      display: flex;
      flex-direction: column;
      gap: 10px
  }

  .option {
      padding: 12px 18px;
      background: #eee;
      border-radius: 6px;
      cursor: pointer;
      transition: background .2s
  }

  .option.selected {
      background: #007BFF;
      color: #fff;
      font-weight: 600
  }

  .buttons {
      margin-top: 25px;
      display: flex;
      justify-content: space-between
  }

  .buttons button {
      padding: 12px 25px;
      background: #007BFF;
      color: #fff;
      border: none;
      border-radius: 6px;
      cursor: pointer;
      transition: background .2s
  }

  .buttons button:disabled {
      background: #99c1ff;
      cursor: not-allowed
  }