CSS ImagesTransparent/Opaque
It’s easy to create transparent images using CSS.
Note: The CSS Opacity property is part of the W3C’s CSS3 recommendations.
Example 1 - Creating a Transparent Image
The transparency property in CSS3 is opacity.
First we will show you how Create a transparent image with CSS.
Normal image
The same image with transparency:
Example
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
img
{
opacity:0.4;
filter:alpha(opacity=40); /* For IE8 and earlier */
}
</style>
</head>
<body>
<img src="https://img.php.cn/upload/course/000/000/006/580837363b987802.jpg" height="300px" width="300px">
</body>
</html>Run the program to see
Look at the following CSS:
opacity:0.4;
filter:alpha(opacity=40); /* For IE8 and earlier */
}
Example 2 - Image Transparency - Hover Effect
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
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 */
}
</style>
</head>
<body>
<img src="https://img.php.cn/upload/course/000/000/006/580837363b987802.jpg" height="300px" width="300px">
</body>
</html>
opacity:0.4;
filter:alpha(opacity=40); /* For IE8 and earlier */
}
img:hover
{
opacity:1.0;
filter:alpha(opacity=100); /* For IE8 and earlier */
}
The first CSS block is similar to the code in Example 1. Additionally, we've added what happens when the user hovers over one of the images. In this case, we want the image to be clear when the user hovers over it.
This CSS is: opacity=1.
IE8 and earlier versions use: filter:alpha(opacity=100).
When the mouse pointer moves away from the image, the image will regain transparency.
Example 3 - Text in a transparent box
The text is in a transparent box. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes. The texts are in transparent boxes.
The source code is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
div.background
{
width:500px;
height:250px;
background:url(https://img.php.cn/upload/course/000/000/006/5809800b44336872.jpg) repeat;
border:2px solid black;
}
div.transbox
{
width:400px;
height:180px;
margin:30px 50px;
background-color: #fcffe0;
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">
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</p>
</div>
</div>
</body>
</html>Run the program and try it
