.question { margin-bottom: 14px; font-size: 16px; }
  .blank { display: inline-block; margin: 0 4px; }
  .blank input { width: 100px; }
  .wrong { border: 2px solid red; background: #ffecec; }
  .correct { border: 2px solid green; background: #ecffec; }
  .correct-answer { display:none; color: green; font-style: italic; margin-left: 6px; }
  .score { font-weight: bold; margin-top: 15px; }