html, body {
  height: 100%;
  margin: 0;
}

body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #F1F1F1;
}
.loader {
    position: relative;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(#F07E6E, #84CDFA, #5AD1CD);
    animation: animate 1.2s linear infinite;
}
@keyframes animate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}
.loader span {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(#0097DC, #C5C5FF, #8EDCFD);
}
.loader span:nth-child(1) {
    filter: blur(5px);
}
.loader span:nth-child(2) {
    filter: blur(10px);
}
.loader span:nth-child(3) {
    filter: blur(25px);
}
.loader span:nth-child(4) {
    filter: blur(50px);
}
.loader:after {
    content: ‘’;
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    background: #F1F1F5;
    border: solid white 10px;
    border-radius: 50%;
}