message: refactor: minor css cleanup
diff: -o-transition: all .15s ease-in-out;
  transition: all .15s ease-in-out;
  display: block;
  + margin: 0;
  padding: $side-menu-item-vpadding*2.5 $side-menu-item-hpadding;
  &[hidden] {
  padding: 0;
  }
  -.menu-item:hover,
  -.menu-item.active {
  - //background: darken($side-menu-active-bg-color, 6%);
  -}
  -
  .menu-subitems {
  margin: 0;
  font-size: 0.929em;
  