In CSS, you can use the opacity attribute to set the transparency of the image. The syntax is "opacity: value", where the value range is between "0.0-1.0"; when the value is 1, it means completely opaque, when the value is A value of 0.5 represents translucence, and a value of 0 represents complete transparency.
The operating environment of this tutorial: Windows7 system, CSS3&&HTML5 version, Dell G3 computer.
Picture transparency setting
.opacity img{opacity: 0.5;}The code and effect pictures are as follows.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body {
background:url(../images/bg.jpg) no-repeat;
}
.opacitybox{
width: 400px;
height: 200px;
margin:0 auto;
margin-top:320px;
}
.opacity img{
opacity: 0.5;
}
</style>
</head>
<body>
<div class= "opacitybox opacity">
<img src="../images/img.jpg" alt="" width="100%">
</div>
</body>
</html>
Recommended learning: css video tutorial
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