forms.sass

// http://www.w3schools.com/cssref/css3_pr_appearance.asp
=appearance($a)
  appearance: $a
  -webkit-appearance: $a
  -moz-appearance: $a

select
  +appearance(none)
  line-height: 1
  background: #fff
  background:
    size: auto 100%
  +background(url("select-down-icon.svg") right no-repeat, linear-gradient(top, $btnBackground, $btnBackgroundHighlight))
  // svg and png here https://www.dropbox.com/sh/ibc6q811xtpt3nh/UVDstrG0-0
  // maybe add svg > png fallback