.box {
    position: relative;
    align-items: center;
    height: 400px;
    background-color: rgb(118, 218, 255);
    overflow: hidden;
    margin: 0 auto;
    width: 1200px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.box:before, .box:after {
    content: "";
    position: absolute;
    left: 50%;
    min-width: 300vw;
    min-height: 300vw;
    background-color: #fff;
    animation: rotate infinite linear;
}
.box:before {
    bottom: 15vh;
    border-radius: 45%;
    animation-duration: 10s;
}

.box:after {
    bottom: 12vh;
    opacity: .5;
    border-radius: 47%;
    animation-duration: 10s;
}
@keyframes rotate {
    0% {
        transform: translate(-50%, 0) rotateZ(0deg);
    }
    50% {
        transform: translate(-50%, -2%) rotateZ(180deg);
    }
    100% {
        transform: translate(-50%, 0%) rotateZ(360deg);
    }
}
h2 {
    position: relative;
    color: #333;
    z-index: 10;
    text-align: center;
    font-size: 50px;
    text-shadow: 3px 3px 2px #999;
}