body {
                font-family: 'Roboto', sans-serif;
                margin: 0;
                background-color: #2e4053;
                background-size: 25px;
                color: #2e4053;
                }
            #container {
                max-width: 50px;
                margin: 0 auto;
}
body {
  margin: 0;
}

ul {
  list-style-type: upper-latin;
  margin: 0;
  padding: 0;
  width: 5%;
  background-color: #6cc2a8  ;
  position: fixed;
  height: 100%;
  overflow: auto;
}

li a {
  display: block;
  color: #000;
  padding: 1px 1px;
  text-decoration: none;
}

.active {
  background-color: #45b39d ;
  color: white;
}

a:hover:not(.active) {
  background-color: #555;
  color: white;
}