High contrast mode on Mozilla browser

Question

I am not able to use any media query for high contrast mode in the Mozilla (Firefox) browser. The media queries given are working fine on IE and edge, but not working on Moz

Answer 1

For Mozilla I use JS to detected high contrast mode or media query

function HCTest(idval) {
    var objDiv, objImage, strColor, strWidth, strReady;
    var strImageID = idval; // ID of image on the page

    // Create a test div
    objDiv = document.createElement('div');

    //Set its color style to something unusual
    objDiv.style.color = 'rgb(31, 41, 59)';

    // Attach to body so we can inspect it
    document.body.appendChild(objDiv);

    // Read computed color value
    strColor = document.defaultView ? document.defaultView.getComputedStyle(objDiv, null).color : objDiv.currentStyle.color;
    strColor = strColor.replace(/ /g, '');

    // Delete the test DIV
    document.body.removeChild(objDiv);

    // Check if we get the color back that we set. If not, we're in 
    // high contrast mode. 
    if (strColor !== 'rgb(31,41,59)') {
        return true;
    } else {
        return false;
    }
}
jQuery(function () {
    var HCM = HCTest();
    if (HCM === true) {
        jQuery('Body').addClass("moz-contrast");
    } else {
        jQuery('Body').removeClass('moz-contrast');
    }
});

CSS For mozila

@-moz-document url-prefix() {

.moz-contrast{
   /**styling**/
}

}