.nav {
  height: 710px;
  width: 23%;
  position: fixed;
  padding: 40px;
  margin-top: 1%;
  margin-left: 67%;
  overflow-y: scroll;
}

.navbutton {
  height: 42px;
  width: 70%;
  vertical-align: middle;
  font-size: 20px;
  line-height: 40px;
  margin-top: 10px;
}

a {
  text-decoration: none;
}