@mixin clearfix()
  content: ""
  display: table
  clear: both

@mixin background-gradient($color, $starting_color: none)
  @if $starting_color == none
    $starting_color: lighten($color, 15%)
  +background-image(linear-gradient($starting_color, $color))

//ported from TT mixins
//includes an IE fallback for simple gradients
@mixin linear-gradient($start, $end)
  background-color: $start
  @include background-image(linear-gradient($start, $end))
  filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, startColorstr='#{$start}', endColorstr='#{$end}')
  //-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr='$start', endColorstr='$end')"