.aside-nav {
  z-index: 999;
  position: fixed;
  width: 1rem;
  top: 3rem;
  right: 0.3rem;
}
.aside-nav .container {
  width: 100%;
}
.aside-nav .container .nav_item {
  display: block;
  margin-bottom: 0.1rem;
  padding: 0.12rem 0.2rem;
  width: 1rem;
  border-radius: 0.25rem;
  background-color: #737373;
  color: #fff;
  font-size: 0.14rem;
  text-align: center;
  cursor: pointer;
}
.aside-nav .container .nav_item_active {
  background-color: #ffe400;
  color: #463f00;
}