Creating transparent images with CSS is easy.
The CSS opacity property is a part of the W3C CSS3 recommendation.
Example 1 - Creating a Transparent Image
The CSS3 property for transparency is opacity.First we will show you how to create a transparent image with CSS.
Regular image:
The same image with transparency:
Look at the following CSS:
img
{
opacity: 0.4;
filter: alpha(opacity=40); /* For IE8 and earlier */
}
opacity: 0.4;
filter: alpha(opacity=40); /* For IE8 and earlier */
}
IE8 and earlier use filter:alpha(opacity=x). The x can take a value from 0 - 100. A lower value makes the element more transparent.
Example 2 - Image Transparency - Hover Effect
Mouse over the images:
The CSS looks like this:Example
img
{
opacity: 0.4;
filter: alpha(opacity=40); /* For IE8 and earlier */
}
img:hover {
opacity: 1.0;
filter: alpha(opacity=100); /* For IE8 and earlier */
}
opacity: 0.4;
filter: alpha(opacity=40); /* For IE8 and earlier */
}
img:hover {
opacity: 1.0;
filter: alpha(opacity=100); /* For IE8 and earlier */
}
Try it yourself »
The CSS for this is: opacity=1.
IE8 and earlier: filter:alpha(opacity=100).
When the mouse pointer moves away from the image, the image will be transparent again.
Example 3 - Text in Transparent Box
This is some text that is placed in the transparent box. This is some
text that is placed in the transparent box. This is some text that is
placed in the transparent box. This is some text that is placed in the
transparent box. This is some text that is placed in the transparent
box.
Example
<html>
<head>
<style>
div.background {
width: 500px;
height: 250px;
background: url(klematis.jpg) repeat;
border: 2px solid black;
}
div.transbox {
width: 400px;
height: 180px;
margin: 30px 50px;
background-color: #ffffff;
border: 1px solid black;
opacity: 0.6;
filter: alpha(opacity=60); /* For IE8 and earlier */
}
div.transbox p {
margin: 30px 40px;
font-weight: bold;
color: #000000;
}
</style>
</head>
<body>
<div class="background">
<div class="transbox">
<p>This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.</p>
</div>
</div>
</body>
</html>
<head>
<style>
div.background {
width: 500px;
height: 250px;
background: url(klematis.jpg) repeat;
border: 2px solid black;
}
div.transbox {
width: 400px;
height: 180px;
margin: 30px 50px;
background-color: #ffffff;
border: 1px solid black;
opacity: 0.6;
filter: alpha(opacity=60); /* For IE8 and earlier */
}
div.transbox p {
margin: 30px 40px;
font-weight: bold;
color: #000000;
}
</style>
</head>
<body>
<div class="background">
<div class="transbox">
<p>This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.
This is some text that is placed in the transparent box.</p>
</div>
</div>
</body>
</html>
Try it yourself »
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