sidebar {
  position: fixed;
  right: 20px;
  top: 50%;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  display: flex;
  flex-flow: column nowrap;
  z-index: 1000;
}

.index-nav-indicator {
  width: 20px;
  font-size: 0;
  line-height: 0;
  text-align: right;
  margin: 4px 0;
}
.index-nav-indicator::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 1px;
  background-color: rgba(0, 0, 0, 0.4);
  transition: background-color 170ms ease-out,width 170ms ease-out;
}
.index-nav-indicator.is-active::before {
  width: 18px;
  background-color: #202020;
}












@media screen and (max-width: 970px){
sidebar {display: none;}
}