CSS image transparent/opaque

CSS Image Transparent/Opaque

It is easy to create transparent images using CSS.

Note: The CSS Opacity property is part of the W3C’s CSS3 recommendations.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>opacity</title>
<style>
*{
    padding: 0;
    margin: 0;
}
body{
    padding: 50px;
    background: url(img/bg.png) 0 0 repeat;
}
.demo{
  padding: 25px;
  background-color:#000000;
  opacity: 0.2;
}
.demo p{
    color: #FFFFFF;
}
</style>
</head>
<body>    
<div class="demo">
    <p>背景透明，文字也透明</p>
</div>
</html>

css3's rgba

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>css3的rgba</title>
<style>
*{
    padding: 0;
    margin: 0;
}
body{
    padding: 50px;
    background: url(img/bg.png) 0 0 repeat;
}
.demo{
  padding: 25px;
  background-color:#000000;/* IE6和部分IE7内核的浏览器(如QQ浏览器)下颜色被覆盖 */
  background-color:rgba(0,0,0,0.2); /* IE6和部分IE7内核的浏览器(如QQ浏览器)会读懂，但解析为透明 */
}
.demo p{
    color: #FFFFFF;
}
</style>
</head>
<body>    
<div class="demo">
    <p>背景透明，文字也透明</p>
</div>
</html>

CSS changes the image from blurry to clear. In fact, it is mainly achieved by using the CSS Filter to change the transparency of the image when the mouse is hovering. By default, the transparency of the image is 70, which means it is somewhat transparent, making the image look a bit blurry. When the mouse is moved over, the transparency of the image becomes 0, which means it is opaque, and the image looks clear. CSS The code is as follows:

<html>
<head>
<meta charset="utf-8">
</head>
<style>
.highlightit img
{
opacity:0.4;
filter:alpha(opacity=40); /* For IE8 and earlier */
}
.highlightit:hover img:hover
{
opacity:1.0;
filter:alpha(opacity=100); /* For IE8 and earlier */
}
</style>
<body>
<a href="#" class="highlightit"><img border="0" src="http://pic2016.5442.com:82/2016/0830/6/11.jpg%21960.jpg" width="180px" height="150px"></a>
<a href="#" class="highlightit"><img border="0" src="http://desk.fd.zol-img.com.cn/t_s960x600c5/g3/M0A/0F/09/Cg-4WFRplp2IYqiNACQ0TQPPChQAARbPQEM84oAJDRl464.jpg" width="180px" height="150px"></a>
</body>
</html>

Continuing Learning

new file

<html> <head> <meta charset="utf-8"> </head> <style> .highlightit img { opacity:0.4; filter:alpha(opacity=40); /* For IE8 and earlier */ } .highlightit:hover img:hover { opacity:1.0; filter:alpha(opacity=100); /* For IE8 and earlier */ } </style> <body> <a href="#" class="highlightit"><img border="0" src="http://pic2016.5442.com:82/2016/0830/6/11.jpg%21960.jpg" width="180px" height="150px"></a> <a href="#" class="highlightit"><img border="0" src="http://desk.fd.zol-img.com.cn/t_s960x600c5/g3/M0A/0F/09/Cg-4WFRplp2IYqiNACQ0TQPPChQAARbPQEM84oAJDRl464.jpg" width="180px" height="150px"></a> </body> </html>

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CSS image transparent/opaque

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