.loader {
    animation: rotate 1s infinite;
    height: 50px;
    width: 50px;
}

    .loader:before,
    .loader:after {
        border-radius: 50%;
        content: "";
        display: block;
        height: 20px;
        width: 20px;
    }

    .loader:before {
        animation: ball1 1s infinite;
        background-color: #fff;
        box-shadow: 30px 0 0 #ff3d00;
        margin-bottom: 10px;
    }

    .loader:after {
        animation: ball2 1s infinite;
        background-color: #ff3d00;
        box-shadow: 30px 0 0 #fff;
    }

@keyframes rotate {
    0% {
        transform: rotate(0deg) scale(0.8)
    }

    50% {
        transform: rotate(360deg) scale(1.2)
    }

    100% {
        transform: rotate(720deg) scale(0.8)
    }
}

@keyframes ball1 {
    0% {
        box-shadow: 30px 0 0 #ff3d00;
    }

    50% {
        box-shadow: 0 0 0 #ff3d00;
        margin-bottom: 0;
        transform: translate(15px, 15px);
    }

    100% {
        box-shadow: 30px 0 0 #ff3d00;
        margin-bottom: 10px;
    }
}

@keyframes ball2 {
    0% {
        box-shadow: 30px 0 0 #fff;
    }

    50% {
        box-shadow: 0 0 0 #fff;
        margin-top: -20px;
        transform: translate(15px, 15px);
    }

    100% {
        box-shadow: 30px 0 0 #fff;
        margin-top: 0;
    }
}