/*-----------------------------------------------------
 アクセサリー
 ------------------------------------------------------*/

 /* トップにもどる */
.to-top {
  width: 100px;
  height: 2rem;
  color: white;
  background-color: #231815;
  opacity: .5;
  position: fixed;
  bottom: -2rem;
  right: 20px;
  transition-property: bottom;
  transition-duration: .8s;
  z-index: 5;
}

.to-top:hover {
  opacity: .7;
  cursor: pointer;
}

/* 動作リンク */
.to-top a {
  display: inline-block;
  vertical-align: bottom;
  width: 100%;
  line-height: 2rem;
}