.lds-ring {
display: inline-block;
position: relative;
width: 32px;
height: 32px;
}
.lds-ring div {
box-sizing: border-box;
display: block;
position: absolute;
width: 25px;
height: 25px;
margin: 6px;
border: 2px solid #363636;
border-radius: 50%;
animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
border-color: #363636 transparent transparent transparent;
}
.lds-ring div:nth-child(1) {
animation-delay: -0.45s;
}
.lds-ring div:nth-child(2) {
animation-delay: -0.3s;
}
.lds-ring div:nth-child(3) {
animation-delay: -0.15s;
}
@keyframes lds-ring {
0% {
  transform: rotate(0deg);
}
100% {
  transform: rotate(360deg);
}
}