.loading_spanner {
        position: fixed;
        top: 50%;
        left: 25%;
        background: #ffffff;
        border-radius: 10px;
        width: 50%;
        display: block;
        text-align: center;
        height: 300px;
        color: #6c757;
        transform: translateY(-50%);
        z-index: 1022;
        visibility: hidden;
    }

    .loading_overlay {
        position: fixed;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1021;
        visibility: hidden;
    }

    .loader,
    .loader:before,
    .loader:after {
        border-radius: 50%;
        width: 2.5em;
        height: 2.5em;
        -webkit-animation-fill-mode: both;
        animation-fill-mode: both;
        -webkit-animation: load7 1.8s infinite ease-in-out;
        animation: load7 1.8s infinite ease-in-out;
    }

    .loader {
        color: #000080;
        font-size: 10px;
        margin: 80px auto;
        position: relative;
        text-indent: -9999em;
        -webkit-transform: translateZ(0);
        -ms-transform: translateZ(0);
        transform: translateZ(0);
        -webkit-animation-delay: -0.16s;
        animation-delay: -0.16s;
    }

    .loader:before,
    .loader:after {
        content: '';
        position: absolute;
        top: 0;
    }

    .loader:before {
        left: -3.5em;
        -webkit-animation-delay: -0.32s;
        animation-delay: -0.32s;
    }

    .loader:after {
        left: 3.5em;
    }

    @-webkit-keyframes load7 {

        0%,
        80%,
        100% {
            box-shadow: 0 2.5em 0 -1.3em;
        }

        40% {
            box-shadow: 0 2.5em 0 0;
        }
    }

    @keyframes load7 {

        0%,
        80%,
        100% {
            box-shadow: 0 2.5em 0 -1.3em;
        }

        40% {
            box-shadow: 0 2.5em 0 0;
        }
    }

    .show {
        visibility: visible;
    }

    .loading_spanner,
    .loading_overlay {
        opacity: 0;
        -webkit-transition: all 0.3s;
        -moz-transition: all 0.3s;
        transition: all 0.3s;
    }

    .loading_spanner.show,
    .loading_overlay.show {
        opacity: 1
    }