change transparency of background image css code example
Example 1: set background image opacity
#bg{
background-image: url('images/wood1.jpg');
opacity:0.2;
width:300px;
height:300px;
}
Example 2: have a transparent div on an image html
<html>
<head>
<style type="text/css">
div.imageSub { position: relative; }
div.imageSub img { z-index: 1; }
div.imageSub div {
position: absolute;
left: 15%;
right: 15%;
bottom: 0;
padding: 4px;
height: 16px;
line-height: 16px;
text-align: center;
overflow: hidden;
}
div.imageSub div.blackbg {
z-index: 2;
background-color: #000;
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
filter: alpha(opacity=50);
opacity: 0.5;
}
div.imageSub div.label {
z-index: 3;
color: white;
}
</style>
</head>
<body>
<div class="imageSub" style="width: 300px;">
<img src="image.jpg" alt="Something" />
<div class="blackbg"></div>
<div class="label">Label Goes Here</div>
</div>
</body>
</html>