Elgg-Lorea-Hydra/views/default/css/elements/misc/spinner.css

/* ***************************************
	FIXED POSITION AJAX INDICATOR
*************************************** */

.elgg-spinner {
    /* general spinner styles */
    background: #fff;
    padding: 10px;
    border: 1px solid #CCC;
    border-top: 0;
    border-radius: 0 0 15px 15px;
    /* negative half the width for proper centering */
    margin-left: -25.5px;

    position: fixed;
    top: 0;
    z-index: 10000;

    /* transitioned values */
    left: -10000px;
    opacity: 0;

    /* fade out over 300ms, then jump offscreen */
    -webkit-transition: opacity 300ms ease-in-out, left 0s linear 300ms;
    transition: opacity 300ms ease-in-out, left 0s linear 300ms;
}

.elgg-spinner-active .elgg-spinner {
    left: 50%;
    opacity: 1;

    /* set values immediately */
    -webkit-transition: opacity 0s, left 0s;
    transition: opacity 0s, left 0s;
}