%label
  transform-origin:
  %select{"ng-model"=>"origin","ng-init"=>"origin='center'", "ng-options"=>"option as option for option in ['center','top','right','bottom','left']"}
  
.triangles
  -10.times do
    .triangle{:style=>"-webkit-transform-origin: {{ origin }}; -ms-transform-origin: {{ origin }}; transform-origin: {{ origin }};"}