.loading {
    position: relative;
    width: 4rem;
    height: 4rem;
    transform-style: preserve-3d;
    perspective: 800px;
    margin-left: auto;
    margin-right: auto;
}

    .loading .arc {
        position: absolute;
        content: "";
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        border-bottom: 3px solid #FF0000;
    }

        .loading .arc:nth-child(1) {
            animation: rotate1 1.15s linear infinite;
        }

        .loading .arc:nth-child(2) {
            animation: rotate2 1.15s linear infinite;
        }

        .loading .arc:nth-child(3) {
            animation: rotate3 1.15s linear infinite;
        }

        .loading .arc:nth-child(1) {
            animation-delay: -0.8s;
        }

        .loading .arc:nth-child(2) {
            animation-delay: -0.4s;
        }

        .loading .arc:nth-child(3) {
            animation-delay: 0s;
        }

@keyframes rotate1 {
    from {
        transform: rotateX(35deg) rotateY(-45deg) rotateZ(0);
    }

    to {
        transform: rotateX(35deg) rotateY(-45deg) rotateZ(1turn);
    }
}

@keyframes rotate2 {
    from {
        transform: rotateX(50deg) rotateY(10deg) rotateZ(0);
    }

    to {
        transform: rotateX(50deg) rotateY(10deg) rotateZ(1turn);
    }
}

@keyframes rotate3 {
    from {
        transform: rotateX(35deg) rotateY(55deg) rotateZ(0);
    }

    to {
        transform: rotateX(35deg) rotateY(55deg) rotateZ(1turn);
    }
}