.modulo_loading {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    text-align: center;
    background: rgb(255,255,255,.7);
}

.modulo_loading img {
    position: absolute;
    top: calc(50% - 20px);
}