.loader {
  font-size: 17px;
  position: relative;
  display: inline-block;
  width: 8em;
  height: 2em;
}

.slider {
  position: absolute;
  inset: 0;
  background: #0974f1;
  border-radius: 50px;
  box-shadow: 0 0px 20px rgba(9, 117, 241, 0.4);
}

.slider:before {
  position: absolute;
  content: "";
  height: 1.4em;
  width: 1.4em;
  left: 0.3em;
  bottom: 0.3em;
  background-color: white;
  border-radius: 50px;
  animation: move 1.5s cubic-bezier(0.23, 1, 0.320, 1) infinite alternate;
}

@keyframes move {
  0% {
    transform: translateX(0em) rotate(0deg);
  }

  100% {
    transform: translateX(6em) rotate(270deg);
  }
}