/* linee di collegamento */
#feeder .st1,
#feeder .st0 {
  stroke: #BDD61E;
  fill: none;
}

#feeder .st1 { stroke-width: 0.02vw; }
#feeder .st0 { stroke-width: 0.04vw; }

/* areola dello spot */
#feeder .st2 {
  opacity: .3;
  fill: #BDD61E;
  transform-origin: center center;
  transform-box: fill-box;
  transition: transform 2000ms ease;
}

/* cerchio bianco nello spot */
#feeder .st3 {
  fill: #FFFFFF;
  transform-origin: center center;
  transform-box: fill-box;
  transition: transform 2000ms ease;
}