body {
  background-color: #fee2c5;
  color: white;
  width: 100%;
  height: 100vh;
  display: grid;
  place-content: center;
}

.loader {
  width: 8em;
  height: 8em;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate3d(-50%, -50%, 0);
  margin: 0px auto;
  overflow: hidden;
}

.loader::before {
  content: "";
  display: block;
  width: 100%;

  height: 100%;
  position: absolute;
  background: linear-gradient(to bottom right, #faea48, #3330e4);
  animation: loading 4.5s linear infinite;
}

@keyframes loading {
  0% {
    transform: translate3d(-7em, -7em, 0);
  }
  25% {
    transform: translate3d(7em, -7em, 0);
  }
  50% {
    transform: translate3d(7em, 7em, 0);
  }
  75% {
    transform: translate3d(-7em, 7em, 0);
  }
  100% {
    transform: translate3d(-7em, -7em, 0);
  }
}

@keyframes colour {
  0% {
    background-color: #f8e81c;
  }
  25% {
    background-color: #3330e4;
  }
  50% {
    background-color: #f8e81c;
  }
  75% {
    background-color: #3330e4;
  }
  100% {
    background-color: #f8e81c;
  }
}