/*** 追従するトップへ戻るボタン ***/
#page-top {
  position: fixed;
  right: 5px;
  bottom: 30px;
  height: 80px;
  text-decoration: none;
  font-weight: bold;
  transform: rotate(90deg);
  font-size: 70%;
  line-height: 1.5rem;
  letter-spacing: 0em;
  color: #737373;
  padding: 0 0 0 40px;
  border-top: solid 1px;
  font-family: YuMincho, "Yu Mincho", "Hiragino Mincho ProN", serif;
}
#page-top::before {
  content: "";
  display: block;
  position: absolute;
  top: -1px;
  left: 0px;
  width: 15px;
  border-top: solid 1px;
  transform: rotate(35deg);
  transform-origin: left top;
}
/**********************************/