.gbg {
  background-color: transparent;
  text-align: center;
  vertical-align: middle;
  width: auto;
  height: auto;
}

.obg {
  background-color: transparent;
  text-align: center;
  vertical-align: middle;
  width: auto;
  height: auto;
}

.rbg {
  background-color: transparent;
  text-align: center;
  vertical-align: middle;
  width: auto;
  height: auto;
}