cms-system/cms-editor/templates/default_v5/assets/css/loader.css

.bt-spinner {
    width: 75px;
    height: 75px;
    margin: 0;
    background: transparent;
    border-top: 4px solid #0b8bb2;
    border-right: 4px solid transparent;
    border-radius: 50%;
    -webkit-animation: 1s spin linear infinite;
    animation: 1s spin linear infinite;
    
}

-webkit-@keyframes spin {
    -webkit-from {
        -webkit-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    -webkit-to {
        -webkit-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-webkit-keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}