.back-to-top {
  color: #f5f5f5;
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 50px;
  height: 50px;
  line-height: 10.35px;
  border-radius: 50%;
  border: 2px solid #586376;
  background-color: #152136;
  opacity: 0.8;
  text-align: center;
  z-index: 279; /* waifu.z-index[280-289] */
  -webkit-transition: all 0.3s ease-out 0s;
  -moz-transition: all 0.3s ease-out 0s;
  -ms-transition: all 0.3s ease-out 0s;
  -o-transition: all 0.3s ease-out 0s;
  transition: all 0.3s ease-out 0s;
  user-select: none;
  display: none;
}

.back-to-top:hover {
  color: #f5f5f5;
  background-color: #4f8bae;
  border-color: #4f8bae;
}
.chevron-up {
  fill: #f5f5f5;
  display: inline-block;
  width: 20px;
  height: 20px;
}

.back-to-hpg {
  font-size: 14px;
  color: #f5f5f5;
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 50px;
  height: 50px;
  line-height: 18px;
  border-radius: 50%;
  border: 2px solid #586376;
  background-color: #152136;
  opacity: 0.8;
  text-align: center;
  z-index: 279; /* waifu.z-index[280-289] */
  -webkit-transition: all 0.3s ease-out 0s;
  -moz-transition: all 0.3s ease-out 0s;
  -ms-transition: all 0.3s ease-out 0s;
  -o-transition: all 0.3s ease-out 0s;
  transition: all 0.3s ease-out 0s;
  user-select: none;
  display: none;
}
.back-to-hpg:hover {
  color: #f5f5f5;
  background-color: #4f8bae;
  border-color: #4f8bae;
}
.back-to-hpg span{
  cursor: default;
}