* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  background-color: #f7f7f7;
  font-family: "Helvetica Neue", "Helvetica", sans-serif;
  margin: 0 auto;
  position: relative;
}

#content {
  background-color: #fff;
  margin: 1.5rem 1.5rem 100vh 18rem;
  padding: 3rem;
}
.links {
  right: 10px;
  position: fixed;
  padding: 0px;
  text-align: center;
  top: 50%;
  width: 10px;
  z-index: 199;
  margin-top: -70px;
}
.links ul {
  list-style: none;
  text-align: left;
}
.links li {
  left: 50%;
  padding-left: 0px;
  position: relative;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  transform: translateX(-50%);
}
.links li::before {
  background-color: #aaa;
  border-radius: 50%;
  content: "";
  height: 0.5rem;
  left: 0;
  position: absolute;
  top: 50%;
  -webkit-transform: translateY(-50%) scale(1);
  -ms-transform: translateY(-50%) scale(1);
  transform: translateY(-50%) scale(1);
  width: 0.5rem;
}
.links li:not(:last-of-type) {
  margin-bottom: 1rem;
}
.links a {
  color: #ff00ff;
  text-decoration: none;
  
}
.links .active {
  font-weight: bold;
  text-shadow: 1px 1px #ff0000;
}
.links .active::before {
  background-color: #000;
  -webkit-transition: -webkit-transform 150ms;
  transition: -webkit-transform 150ms;
  transition: transform 150ms;
  transition: transform 150ms, -webkit-transform 150ms;
  -webkit-transform: scale(1.8) translateY(-50%);
  -ms-transform: scale(1.8) translateY(-50%);
  transform: scale(1.8) translateY(-50%);
  -webkit-transform-origin: 50% 0%;
  -ms-transform-origin: 50% 0%;
  transform-origin: 50% 0%;
}