.loader {
    transform: rotateZ(45deg);
    perspective: 1000px;
    border-radius: 50%;
    width: 100px;
    height: 100px;
    color: #FFF;
}

.loader-container {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0,0,0,0.95);
}

    .loader:before,
    .loader:after {
        content: '';
        display: block;
        position: absolute;
        margin: 0 auto;
        width: inherit;
        height: inherit;
        border-radius: 50%;
        transform: rotateX(50deg);
        animation: 1s spin linear infinite;
    }

    .loader:after {
        color: #FF3D00;
        transform: rotateY(50deg);
        animation-delay: .5s;
    }

@keyframes rotate {
    0% {
        transform: translate(-50%, -50%) rotateZ(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotateZ(360deg);
    }
}

@keyframes rotateccw {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(-360deg);
    }
}

@keyframes spin {
    0%, 100% {
        box-shadow: .2em 0px 0 0px currentcolor;
    }

    12% {
        box-shadow: .2em .2em 0 0 currentcolor;
    }

    25% {
        box-shadow: 0 .2em 0 0px currentcolor;
    }

    37% {
        box-shadow: -.2em .2em 0 0 currentcolor;
    }

    50% {
        box-shadow: -.2em 0 0 0 currentcolor;
    }

    62% {
        box-shadow: -.2em -.2em 0 0 currentcolor;
    }

    75% {
        box-shadow: 0px -.2em 0 0 currentcolor;
    }

    87% {
        box-shadow: .2em -.2em 0 0 currentcolor;
    }
}