widget-modality-skin.css

/*
YUI 3.7.1 (build 5627)
Copyright 2012 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/
.yui3-skin-sam .yui3-widget-mask {
    background-color: black;
    zoom: 1;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(opacity=40)";
    filter: alpha(opacity=40);
    opacity: 0.4;
}