Wind

@grid: 2x1
  ~ -5px 80px
  * 8deg
  / 600px
  / @doodle(@shape: vase; background: #000)
    50% 100% / 36% 50% no-repeat border;

background: #000;
animation: @pn(none, r 2s ease infinite);
@place: @pn(50%, 50% 2.5em);
@size: @pn(2px calc(100% - 5em), 20%);
@shape: @pn(none, windmill);
@keyframes r { to { rotate: 360deg } }