.loader {
    display: none;
    position: fixed;
    z-index: 99999;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: rgba( 255, 255, 255, .3 );
    transition: all 0.5s ease 0s;
    color: #888;
}

body.loading {
    overflow: hidden;
}

    body.loading .loader {        
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

@media only screen and (min-width: 1025px) {
    .loader {
        font-size: 1.35em;
    }
}