body {
  height: 100vh;
  display: grid;
  place-items: center;
  background: #252839;
}

.loader {
  position: relative;
  width: 200px;
  height: 200px;
}

.loader div {
  position: absolute;
  border: 15px solid #0072ff;
  opacity: 1;
  border-radius: 50%;
  background: #252893;
  filter: dorp-shadow(0 0 5px #0072ff) drop-shadow(0 0 25px #0072ff);
  animation: animate 1.5s cubic-bezier(0, 0.2, 0.8, 1) infinite;
}

.loader div:nth-child(2) {
  animation-delay: -0.5s;
}

@keyframes animate {
  0% {
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    opacity: 1;
  }

  100% {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
  }
}

h1 {
  position: absolute;
  top: 140px;
  color: white;
  font-family: cursive;
  text-align: center;
  width: 100%;
  z-index: 100;
}