// Stacked
.{$fi-css-prefix}-stack
  position: relative
  z-index: 1
  display: inline-block
  width: 2.2em
  height: 2.2em
  line-height: 2.2em
  vertical-align: middle
  &.ellipse:after
    content: "\ea0c"
  &.curve:after
    content: "\ea0b"
  &.rectangle:after
    content: "\ea0d"
  &:after
    position: absolute
    z-index: -1
    left: 0
    width: 100%
    text-align: center
    font-size: 2.2em
  &:before
    position: absolute
    left: 0
    width: 100%
    text-align: center
    line-height: inherit
    color: $fi-font-color-inverse