bloom eclipse loader no animation

clipse.css

.loader {
  position: relative;
  margin: 10% auto;
  height: 50vh;
  width: 50vh;
  border-radius: 100%;
  background-color: black;
}
 .loader::after{
   position: absolute;
   height: 50vh;
   width: 50vh;
   background-color: #fff;
   box-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ffffb3, 0 0 70px #ffffb3, 0 0 80px #ffffb3, 0 0 100px #ffffb3, 0 0 150px #FF1177;
   content: "";
   z-index: -1;
   border-radius: 100%;
}