#page_top_auto{
  width: 60px;
  height: 40px;
  position: fixed;
  right: 0;
  bottom: 0;
  background: #606060;
  opacity: 0.6;
  border-radius: 15px;
  z-index: 9999999;
}
#page_top_auto a{
  position: relative;
  display: block;
  width: 60px;
  height: 40px;
  text-decoration: none;
}
#page_top_auto a::before{
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  content: '\f102';
  font-size: 20px;
  color: #fff;
  position: absolute;
  width: 25px;
  height: 25px;
  top: -10px;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  text-align: center;
}
#page_top_auto a::after{
  content: 'TOP';
  font-size: 8px;
  color: #fff;
  position: absolute;
  top: 24px;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  text-align: center;
}