jellyfin-web/src/components/loading/loading.scss

.mdl-spinner {
    position: relative;
    width: 1.95em;
    height: 1.95em;
    display: none;
}

.mdlSpinnerActive {
    display: inline-block;
    animation: mdl-spinner__container-rotate 1568.23529412ms linear infinite;
}

@keyframes mdl-spinner__container-rotate {
    to {
        transform: rotate(360deg);
    }
}

.mdl-spinner__layer {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.mdl-spinner__layer-1 {
    border-color: #00a4dc;
}

.mdl-spinner__layer-1-active {
    animation: mdl-spinner__fill-unfill-rotate 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both, mdl-spinner__layer-1-fade-in-out 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

.mdl-spinner__layer-2 {
    border-color: #00a4dc;
}

.mdl-spinner__layer-2-active {
    animation: mdl-spinner__fill-unfill-rotate 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both, mdl-spinner__layer-2-fade-in-out 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

.mdl-spinner__layer-3 {
    border-color: #00a4dc;
}

.mdl-spinner__layer-3-active {
    animation: mdl-spinner__fill-unfill-rotate 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both, mdl-spinner__layer-3-fade-in-out 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

.mdl-spinner__layer-4 {
    border-color: #00a4dc;
}

.mdl-spinner__layer-4-active {
    animation: mdl-spinner__fill-unfill-rotate 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both, mdl-spinner__layer-4-fade-in-out 5332ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

@keyframes mdl-spinner__fill-unfill-rotate {
    12.5% {
        transform: rotate(135deg);
    }

    25% {
        transform: rotate(270deg);
    }

    37.5% {
        transform: rotate(405deg);
    }

    50% {
        transform: rotate(540deg);
    }

    62.5% {
        transform: rotate(675deg);
    }

    75% {
        transform: rotate(810deg);
    }

    87.5% {
        transform: rotate(945deg);
    }

    to {
        transform: rotate(1080deg);
    }
}

/**
* HACK: Even though the intention is to have the current .mdl-spinner__layer-N
* at `opacity: 1`, we set it to `opacity: 0.99` instead since this forces Chrome
* to do proper subpixel rendering for the elements being animated. This is
* especially visible in Chrome 39 on Ubuntu 14.04. See:
*
* - https://github.com/Polymer/paper-spinner/issues/9
* - https://code.google.com/p/chromium/issues/detail?id=436255
*/
@keyframes mdl-spinner__layer-1-fade-in-out {
    from {
        opacity: 0.99;
    }

    25% {
        opacity: 0.99;
    }

    26% {
        opacity: 0;
    }

    89% {
        opacity: 0;
    }

    90% {
        opacity: 0.99;
    }

    100% {
        opacity: 0.99;
    }
}

@keyframes mdl-spinner__layer-2-fade-in-out {
    from {
        opacity: 0;
    }

    15% {
        opacity: 0;
    }

    25% {
        opacity: 0.99;
    }

    50% {
        opacity: 0.99;
    }

    51% {
        opacity: 0;
    }
}

@keyframes mdl-spinner__layer-3-fade-in-out {
    from {
        opacity: 0;
    }

    40% {
        opacity: 0;
    }

    50% {
        opacity: 0.99;
    }

    75% {
        opacity: 0.99;
    }

    76% {
        opacity: 0;
    }
}

@keyframes mdl-spinner__layer-4-fade-in-out {
    from {
        opacity: 0;
    }

    65% {
        opacity: 0;
    }

    75% {
        opacity: 0.99;
    }

    90% {
        opacity: 0.99;
    }

    100% {
        opacity: 0;
    }
}

.mdl-spinner__circle {
    box-sizing: border-box;
    height: 100%;
    border-width: 0.21em;
    border-style: solid;
    border-color: inherit;
    border-bottom-color: transparent !important;
    border-radius: 50%;
    animation: none;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

.mdl-spinner__circle-clipper {
    display: inline-block;
    position: relative;
    width: 50%;
    height: 100%;
    overflow: hidden;
    border-color: inherit;
}

.mdl-spinner__circle-clipper .mdl-spinner__circle {
    width: 200%;
}

.mdl-spinner__circleLeft {
    border-right-color: transparent !important;
    transform: rotate(129deg);
}

.mdl-spinner__circleLeft-active {
    animation: mdl-spinner__left-spin 1333ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

.mdl-spinner__circleRight {
    left: -100%;
    border-left-color: transparent !important;
    transform: rotate(-129deg);
}

.mdl-spinner__circleRight-active {
    animation: mdl-spinner__right-spin 1333ms cubic-bezier(0.4, 0, 0.2, 1) infinite both;
}

@keyframes mdl-spinner__left-spin {
    from {
        transform: rotate(130deg);
    }

    50% {
        transform: rotate(-5deg);
    }

    to {
        transform: rotate(130deg);
    }
}

@keyframes mdl-spinner__right-spin {
    from {
        transform: rotate(-130deg);
    }

    50% {
        transform: rotate(5deg);
    }

    to {
        transform: rotate(-130deg);
    }
}

.docspinner {
    margin-top: -5vh;
    margin-left: -5vh;
    width: 10vh;
    height: 10vh;
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 9999999;
    contain: layout style size;
}