#qna table {
  border-collapse: collapse;
  width: 80%;
  margin: 1rem auto;
  border: 1px solid #ddd;
  background-color: white;
}

/* 테이블 행 */
#qna th,
#qna td {
  padding: 8px;
  text-align: left;
  border-bottom: 1px solid #ddd;
}
#qna th { text-align: center; }
#qna td.no { text-align: center; }
#qna td.answer { color: red; }

#qna th {
  background-color: #1b1b1b;
  color: #ddd;
}

/* 테이블 올렸을 때 */
#qna tbody tr:hover {
  background-color: #d3d3d3;
  opacity: 0.9;
  cursor: pointer;
}

/* 테이블 비율 */
#qna th:nth-child(1),
#qna td:nth-child(1) {
  width: 10%;
}

#qna th:nth-child(2),
#qna td:nth-child(2) {
  width: 90%;
}