@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    /* IE10+ CSS styles go here */
    body {
        background-color: #999999;
        background-image: -ms-linear-gradient(top, #999999 0%, #FFFFFF 100%);
    }

    .signed-in-holder {
        z-index:100;
    }
}