.loader {
 display: flex;
 justify-content: center;
 align-content: center;
 align-items: center;
 gap: 5px;
 height: 80px;
 width: 80px;
}

.bar {
 width: 7px;
 height: 50px;
 border-radius: 10em;
 background-image: linear-gradient(60deg, #4158D0 0%, #C850C0 46%, #FFCC70 100%);
 background-size: 390%;
 animation: live 2s linear infinite;
}

@keyframes live {
 0%, 50%, 100% {
  transform: scaleY(1);
 }

 30%, 70% {
  background-position: right;
  transform: scaleY(1.15);
 }
}