.tree ul,
.tree li
  padding 0
  margin 0
  list-style none

.tree
  font normal 16px $font-proxima, Arial, Sans-serif
  -moz-user-select none
  -webkit-user-select none
  user-select none
  input
    position absolute
    opacity 0
    & + label
      & + ul
        margin 0 0 0 22px
    & ~ ul
      display none
    &:disabled
      & + label
        cursor default
        opacity .6
    &:checked
      &:not(:disabled)
        & ~ ul
          display block
      & + label
        &::before
          font-family: "SSStandard"
          content: 'navigateup'
  a
    color #00f
    text-decoration none
    &:hover
      text-decoration underline
  label
    &::before
      content ""
      width 16px
      vertical-align middle
      background-position 0 -32px

.tree label,
.tree label::before
  font-family: "SSStandard"
  cursor pointer
  content: "folder"

.tree label,
.tree a,
.tree label::before
  display inline-block
  height 16px
  line-height 16px
  vertical-align middle
  margin: 10px

.tree label
  font-family: $font-proxima