stylus select box mixin. http://codepen.io/anon/pen/XXOYpW?editors=1100

sample.html

<div class="select">
  <select>
    <option value="a">AAA</option>
    <option value="b">BBB</option>
    <option value="c">CCC</option>
  </select>
</div>

select.styl

select(width)
  padding 0
  margin 0
  border 1px solid #ccc
  width width
  border-radius 3px
  overflow hidden
  background-color #fff
  background #fff url("data:image/gif;base64,R0lGODlhDwAUAIABAAAAAP///yH5BAEAAAEALAAAAAAPABQAAAIXjI+py+0Po5wH2HsXzmw//lHiSJZmUAAAOw==") no-repeat 95% 50%
  select
    padding 0.5em 8px
    width 130%
    border none
    box-shadow none
    background-color transparent
    background-image none
    -webkit-appearance none
    -moz-appearance none
    appearance none
    font inherit
    color inherit
    &:focus
      outline none

chci se to naucit