body {
  background-image: url(/textlive/images/book_josetsu_dic/dic_text_back_pc.jpg);
  background-size: 100%;
}
.navi {
  background-color: unset;
}
.header,
.footer,
#contents {
  background-color: #ffffff;
}
.footer,
.navi,
#contents {
  margin: 0 auto;
}

.header__logo {
  background-color: #e74436;  /* 最上部 おさるロゴの背景 */
}
.hb-hobo-logo:before {
  color: white;  /* 最上部 おさるロゴの色 */
}

.header__lead {
  padding: 46px 10px; /* ヨドガワの余白 縦 横 */
  max-width: max(400px, 68%);
  font-family: "A1 Gothic R", sans-serif;
}

.footer {
  padding-top: 20px;
}

#contents {
  max-width: 900px;
}

@media (max-width: 900px) {
  body {
    background-image: url(/textlive/images/book_josetsu_dic/dic_text_back_sp.jpg);
  }
  .header,
  .footer,
  #contents {
      background-color: rgba(255, 255, 255, 0.9);
  }
  .header__lead {
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .header__lead {
    font-size: 14px;
  }
}