实现网站变灰
效果图:
默认效果图:
Demo实现代码:
页面CSS样式
* {
margin: 0;
padding: 0;
}
html,
body {
width: 100%;
height: 100%;
}
html {
/* 灰色模式 */
/* -webkit-filter: grayscale(1);
filter: grayscale(1); */
}
#app {
width: 100vw;
height: 100vh;
}
#app h1 {
line-height: 100px;
font-size: 40px;
font-weight: bold;
text-align: center;
}
h2 {
line-height: 100px;
font-size: 30px;
font-weight: bold;
text-align: center;
}
h2.r {
background: red;
}
h2.g {
background: green;
}
img {
width: 375px;
height: 200px;
}
页面布局
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
</head>
<body>
<div id="app">
<h1>Filder</h1>
<br>
<h2 class="r">红色 - RED</h2>
<br>
<img src="https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1586019993398&di=2e9ec900359cb1a24c6c5ec131ae87f2&imgtype=0&src=http%3A%2F%2Fimg0.imgtn.bdimg.com%2Fit%2Fu%3D4048520830%2C957432571%26fm%3D214%26gp%3D0.jpg"
draggable="false">
<br>
<br>
<h2 class="g">绿色 - GREEN</h2>
</div>
</body>
</html>
置灰效果图:
置灰效果关键代码:
html {
/* 灰色模式 */
-webkit-filter: grayscale(100%);
filter: grayscale(100%);
filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
}
主要用到的就是 CSS3样式的 filter(滤镜)属性