@keyframes item_1 {
  0% {
      transform: rotate(0deg);
      box-shadow: 0 0 5px #b5259d9e;
  } 
  50% {
      box-shadow: 0 0 5px #25b5a89e;
  }
  100% {
      transform: rotate(360deg);
      box-shadow: 0 0 5px #b5259d9e;
  }
}
.item_box {
  position: fixed;
  bottom: 20px;
  right: 20px;
  height: 60px;
  width: 60px;
  box-shadow: 0 0 5px #202020;
  border-radius: 15px;
  z-index: 10000;
}
#item_1 {
  animation: item_1 10s infinite linear;
}
#item_2 {
  animation: item_1 12s infinite linear;
}
#item_3 {
  animation: item_1 14s infinite linear;
}
#item_4 {
  animation: item_1 16s infinite linear;
}
#item_5 {
  animation: item_1 18s infinite linear;
}
#item_6 {
  animation: item_1 20s infinite linear;
}