@media screen and (max-width: 767.999px) {
  #subpage_title_area h1 {
    font-size: 24px;
  }
  #news_detail {
    padding: 30px 30px 80px;
  }
  #news_detail h2 {
    font-size: 18px;
  }
  #news_detail .date {
    color: #888;
    margin-top: 10px;
    font-size: 12px;
    letter-spacing: 0.02em;
    text-align: right;
  }
  #news_detail .contents {
    margin-top: 25px;
  }
  #news_detail .contents .txt {
    line-height: 2.1;
  }
}