#loading > *:nth-child(1) {
  left: calc(50vw - (calc(100px - ( (100px * 25) / 100))/2)); }

#loading > *:nth-child(2) {
  left: calc(50vw - (100px/2)); }

#loading > *:nth-child(3) {
  left: calc(50vw - 200px); }

.loading-rollon > SPAN:first-child {
  margin-left: calc(( (40px * 25) / 100) / 2); }