html,
body,
#content_wrapper {
    height: 100%;
    width: 100%;
    margin: 0;
}

body,
#content_wrapper {
    display: flex;
    margin: 0;
    background-color: #EEEEEE;
}

.loading {
    background-image: url('media/Infinity-2.6s-200px-transp.svg');
    position: absolute;
    left: -500px;
    top: -500px;
    width: 0;
    height: 0;
    background-position: center center;
    border: none;
    background-color: rgba(255, 255, 255, 0.9);
    background-size: contain;
    background-repeat: no-repeat;
}

.loading-cover {
    position: absolute;
    left: -500px;
    top: -500px;
    width: 0;
    height: 0;
    border: none;
    background-color: rgba(255, 255, 255, 0.01);
}