#mouse-ball {
    position: fixed;
    z-index: 999;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    width: 0px;
    height: 0px;
    pointer-events: none;
    /*mix-blend-mode: difference;*/
}

#mouse-ball .circle {
    position: absolute;
    width: 0px;
    height: 0px;
    border-radius: 50%;
    background: rgba(255,255,255,.8);
    -webkit-transition: .25s;
    -o-transition: .25s;
    transition: .25s
}

@media only screen and (max-width: 1200px) {
    #mouse-ball {
        opacity:0
    }
}