Html Window

Set the modalOpacity property of the jqxWindow. Author: http://jqwidgets.com

HTML

<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.base.css">
<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.energyblue.css">
<script src="http://jqwidgets.com/public/jqwidgets/jqx-all.js"></script>
<div id='jqxwindow'>
    <div>Header</div>
    <div>Content<p>1</p><p>2</p><p>3</p><p>4</p><p>5</p></div>
</div>

CSS

.jqx-window-content {
  width: auto !important
}

JavaScript

$("#jqxwindow").jqxWindow({
    height: 100,
    width: 300,
    theme: 'energyblue',
    isModal:true,
    modalOpacity:0.5
});