#pagetop {
  width: 60px;
  height: 60px;
  position: fixed;
  right: 20px;
  bottom: -70px;
  background: #ffffff;
  opacity: 0.8;
  border-radius: 50%;
  font-family:'Noto Sans JP', sans-serif;
  box-shadow: 0px 0px 5px 1px #2e3922;
  z-index: 1;
}
#pagetop a {
  position: relative;
  display: block;
  width: 60px;
  height: 60px;
  text-decoration: none;
}
#pagetop:hover {
  opacity: 1.0;
}
#pagetop a::before{
  font-weight: bold;
  content: '▲\ATOP';
  font-size: 16px;
  color: #96db1a;
  position: absolute;
  height: 16px;
  top: -32px;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  text-align: center;
  white-space: pre;
}