section {
  position: fixed;
  top:10%;
  left: 0;
  height: calc(100% - 100px);
  width: 100%;
  overflow: hidden;
}

.menu {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 120px;
  border-right: 1px solid #4687E6;
  background-color: white;
  z-index: 1;
}

.menu .logo {
  position: absolute;
  top: 5%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.menu line {
  stroke: var(--portal-main-color);
}

.menu a.previous {
  position: absolute;
  top: 25%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--portal-main-color);
}

.menu a.next {
  position: absolute;
  top: 75%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--portal-main-color);
}

.menu nav  {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.menu nav > ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu nav > ul > li {
  border-radius: 100%;
  padding: 8px;
  border: 1px solid white;
  margin-bottom: 15px;
}

.menu nav > ul > li > a {
  display: block;
  border-radius: 100%;
  width: 16px;
  height: 16px;
  background-color: rgba(233, 84, 32, 0.4);
}

.menu nav > ul > li.uk-active {
  border: 1px solid #E95420;
  transition: border-top-color 0.25s linear, border-right-color 0.25s linear 0.10s, border-bottom-color 0.25s linear 0.30s, border-left-color 0.25s linear 0.40s;
  -webkit-animation : border-top-color 0.25s linear, border-right-color 0.25s linear 0.10s, border-bottom-color 0.25s linear 0.30s, border-left-color 0.25s linear 0.40s;
  -moz-animation : border-top-color 0.25s linear, border-right-color 0.25s linear 0.10s, border-bottom-color 0.25s linear 0.30s, border-left-color 0.25s linear 0.40s;
  -o-animation : border-top-color 0.25s linear, border-right-color 0.25s linear 0.10s, border-bottom-color 0.25s linear 0.30s, border-left-color 0.25s linear 0.40s;
}

.menu nav > ul > li.uk-active > a {
  background-color: #E95420;
}