.loader {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}
.loader-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #f47a24;
  margin: 0 7px;
  animation: loader-dot 0.8s infinite ease-in-out;
  animation-delay: 0.1s;
}
.loader-dot:nth-child(2) {
  animation-delay:0.2s;
}
.loader-dot:nth-child(3) {
  animation-delay:0.3s;
}
.loader-dot:nth-child(4) {
  animation-delay:0.4s;
}

@keyframes loader-dot {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.5);
  }
  100% {
    transform: scale(1);
  }
}